Is "@waleedyousaf07/mcp-google-calendar" on MCP Registry Safe to Install?
Thin Google Calendar MCP server for MCP-compatible agents.
Risk Assessment
Analyzed271 security findings detected across all analyzers
MCP server analyzed for tool poisoning, prompt injection, and data exfiltration
Severity Breakdown
Finding Categories
YARA Rules Matched
10 rules(41 hits)MCP Server Analysis
MCP servers expose tools and resources to AI assistants. Unlike browser extensions, they run as standalone processes with direct system access. Tool definitions are analyzed for prompt injection, data exfiltration, and tool poisoning patterns.
About This Extension
Detailed Findings
69 totalYARA Rule Matches
10 rulesIndicators of Compromise
Network indicators, suspicious strings, and potential IoCs extracted during analysis
All Indicators · 172
detected Domain: request.params.argument.name XIOC detected Domain: request.params.argument.name
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detected Domain: compile2.call XIOC detected Domain: compile2.call
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detected URL: https://base64.guru/standards/base64url XIOC detected URL: https://base64.guru/standards/base64url
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detected URL: https://stackoverflow.com/a/3143231 XIOC detected URL: https://stackoverflow.com/a/3143231
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detected URL: https://github.com/colinhacks/zod/blob/master/src/types.ts. XIOC detected URL: https://github.com/colinhacks/zod/blob/master/src/types.ts.
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detected URL: https://github.com/colinhacks/zod/issues/2433 XIOC detected URL: https://github.com/colinhacks/zod/issues/2433
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detected URL: https://github.com/colinhacks/zod/commit/9340fd51e48576a75adc919bff65dbc4a5d4c99b XIOC detected URL: https://github.com/colinhacks/zod/commit/9340fd51e48576a75adc919bff65dbc4a5d4c99b
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detected URL: https://github.com/ajv-validator/ajv/blob/master/lib/definition_schema.js', XIOC detected URL: https://github.com/ajv-validator/ajv/blob/master/lib/definition_schema.js',
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detected URL: https://raw.githubusercontent.com/ajv-validator/ajv/master/lib/refs/data.json# XIOC detected URL: https://raw.githubusercontent.com/ajv-validator/ajv/master/lib/refs/data.json#
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detected URL: http://json-schema.org/draft-07/schema'; XIOC detected URL: http://json-schema.org/draft-07/schema';
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detected URL: https://github.com/epoberezkin/fast-json-stable-stringify) XIOC detected URL: https://github.com/epoberezkin/fast-json-stable-stringify)
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detected URL: http://json-schema.org/schema'] XIOC detected URL: http://json-schema.org/schema']
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detected URL: https://stackoverflow.com/a/46181/1550155 XIOC detected URL: https://stackoverflow.com/a/46181/1550155
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detected URL: https://thekevinscott.com/emojis-in-javascript/#writing-a-regular-expression XIOC detected URL: https://thekevinscott.com/emojis-in-javascript/#writing-a-regular-expression
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detected URL: https://tools.ietf.org/html/rfc6901 XIOC detected URL: https://tools.ietf.org/html/rfc6901
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detected URL: https://tools.ietf.org/html/rfc3986#appendix-A XIOC detected URL: https://tools.ietf.org/html/rfc3986#appendix-A
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detected URL: http://tools.ietf.org/html/draft-luff-relative-json-pointer-00 XIOC detected URL: http://tools.ietf.org/html/draft-luff-relative-json-pointer-00
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detected URL: https://tools.ietf.org/html/rfc3339#appendix-C XIOC detected URL: https://tools.ietf.org/html/rfc3339#appendix-C
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detected URL: http://jmrware.com/articles/2009/uri_regexp/URI_regex.html XIOC detected URL: http://jmrware.com/articles/2009/uri_regexp/URI_regex.html
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detected URL: https://raw.githubusercontent.com/ajv-validator/ajv/master/lib/refs/data.json#' XIOC detected URL: https://raw.githubusercontent.com/ajv-validator/ajv/master/lib/refs/data.json#'
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detected URL: http://json-schema.org/draft-07/schema# XIOC detected URL: http://json-schema.org/draft-07/schema#
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detected URL: https://github.com/eslint/eslint/issues/7983. XIOC detected URL: https://github.com/eslint/eslint/issues/7983.
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detected URL: http://tools.ietf.org/html/rfc3339#section-5.6 XIOC detected URL: http://tools.ietf.org/html/rfc3339#section-5.6
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detected URL: https://github.com/mafintosh/is-my-json-valid/blob/master/formats.js XIOC detected URL: https://github.com/mafintosh/is-my-json-valid/blob/master/formats.js
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detected URL: http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address#answer-8829363 XIOC detected URL: http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address#answer-8829363
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detected URL: https://www.safaribooksonline.com/library/view/regular-expressions-cookbook/9780596802837/ch07s16.html XIOC detected URL: https://www.safaribooksonline.com/library/view/regular-expressions-cookbook/9780596802837/ch07s16.html
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detected URL: http://stackoverflow.com/questions/53497/regular-expression-that-matches-valid-ipv6-addresses XIOC detected URL: http://stackoverflow.com/questions/53497/regular-expression-that-matches-valid-ipv6-addresses
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detected URL: http://tools.ietf.org/html/rfc4122 XIOC detected URL: http://tools.ietf.org/html/rfc4122
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detected URL: https://tools.ietf.org/html/rfc3492#section-3.4 XIOC detected URL: https://tools.ietf.org/html/rfc3492#section-3.4
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detected URL: https://mathiasbynens.be/notes/javascript-encoding XIOC detected URL: https://mathiasbynens.be/notes/javascript-encoding
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detected URL: https://github.com/bestiejs/punycode.js XIOC detected URL: https://github.com/bestiejs/punycode.js
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detected URL: https://tools.ietf.org/html/rfc6570 XIOC detected URL: https://tools.ietf.org/html/rfc6570
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detected URL: https://gist.github.com/dperini/729294 XIOC detected URL: https://gist.github.com/dperini/729294
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detected URL: https://mathiasbynens.be/demo/url-regex XIOC detected URL: https://mathiasbynens.be/demo/url-regex
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detected URL: https://www.googleapis.com/auth/calendar.events XIOC detected URL: https://www.googleapis.com/auth/calendar.events
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detected URL: https://www.googleapis.com/auth/calendar.calendarlist.readonly XIOC detected URL: https://www.googleapis.com/auth/calendar.calendarlist.readonly
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detected URL: http://127.0.0.1:$ XIOC detected URL: http://127.0.0.1:$
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detected URL: https://wiki.debian.org/XDGBaseDirectorySpecification#state XIOC detected URL: https://wiki.debian.org/XDGBaseDirectorySpecification#state
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detected URL: http://github.com/garycourt/uri-js XIOC detected URL: http://github.com/garycourt/uri-js
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detected Domain: object.prototype.hasownproperty.call XIOC detected Domain: object.prototype.hasownproperty.call
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detected IP: 127.0.0.1 XIOC detected IP: 127.0.0.1
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detected URL: https://json-schema.org/draft/2019-09/schema# XIOC detected URL: https://json-schema.org/draft/2019-09/schema#
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detected URL: https://www.googleapis.com/calendar/v3 XIOC detected URL: https://www.googleapis.com/calendar/v3
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detected URL: https://accounts.google.com/o/oauth2/v2/auth XIOC detected URL: https://accounts.google.com/o/oauth2/v2/auth
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detected URL: https://oauth2.googleapis.com/token XIOC detected URL: https://oauth2.googleapis.com/token
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detected Domain: compindex.call XIOC detected Domain: compindex.call
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detected URL: http://json-schema.org/draft-07/schema XIOC detected URL: http://json-schema.org/draft-07/schema
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detected URL: http://json-schema.org/schema XIOC detected URL: http://json-schema.org/schema
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detected URL: https://stackoverflow.com/questions/3966484/why-does-modulus-operator-return-fractional-number-in-javascript/31711034#31711034 XIOC detected URL: https://stackoverflow.com/questions/3966484/why-does-modulus-operator-return-fractional-number-in-javascript/31711034#31711034
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detected URL: https://github.com/modelcontextprotocol/modelcontextprotocol/blob/47339c03c143bb4ec01a26e721a1b8fe66634ebe/docs/specification/draft/basic/index.mdx#general-fields) XIOC detected URL: https://github.com/modelcontextprotocol/modelcontextprotocol/blob/47339c03c143bb4ec01a26e721a1b8fe66634ebe/docs/specification/draft/basic/index.mdx#general-fields)
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detected URL: http://www.w3.org/TR/html5/forms.html#valid-e-mail-address XIOC detected URL: http://www.w3.org/TR/html5/forms.html#valid-e-mail-address
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detected Domain: readme.md XIOC detected Domain: readme.md
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detected Domain: gmail.com XIOC detected Domain: gmail.com
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detected Domain: tcomponents.host XIOC detected Domain: tcomponents.host
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detected Domain: ttarget.host XIOC detected Domain: ttarget.host
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detected Domain: base.host XIOC detected Domain: base.host
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detected Domain: resolve.id XIOC detected Domain: resolve.id
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detected Domain: nformats.fast XIOC detected Domain: nformats.fast
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detected Domain: index.js.map XIOC detected Domain: index.js.map
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detected Domain: cli.js.map XIOC detected Domain: cli.js.map
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detected Domain: gist.github.com XIOC detected Domain: gist.github.com
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detected Domain: jmrware.com XIOC detected Domain: jmrware.com
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detected Domain: thekevinscott.com XIOC detected Domain: thekevinscott.com
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detected Domain: base64.guru XIOC detected Domain: base64.guru
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detected Domain: specifications.freedesktop.org XIOC detected Domain: specifications.freedesktop.org
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detected Domain: twscomponents.secure XIOC detected Domain: twscomponents.secure
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detected Domain: event.organizer.email XIOC detected Domain: event.organizer.email
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detected Domain: value.date XIOC detected Domain: value.date
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detected Domain: attendees.map XIOC detected Domain: attendees.map
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detected Domain: this.tokenstore.save XIOC detected Domain: this.tokenstore.save
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detected Domain: value.start.date XIOC detected Domain: value.start.date
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detected Domain: value.end.date XIOC detected Domain: value.end.date
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detected Domain: logger.info XIOC detected Domain: logger.info
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detected Domain: registeredresource.name XIOC detected Domain: registeredresource.name
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detected URL: https://stackoverflow.com/questions/7860392/determine-if-string-is-in-base64-using-javascript XIOC detected URL: https://stackoverflow.com/questions/7860392/determine-if-string-is-in-base64-using-javascript
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detected Domain: event.id XIOC detected Domain: event.id
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detected Domain: attendee.email XIOC detected Domain: attendee.email
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detected Domain: def.items.map XIOC detected Domain: def.items.map
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detected Domain: request.params.name XIOC detected Domain: request.params.name
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detected Domain: parseresult.data XIOC detected Domain: parseresult.data
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detected Domain: ref.name XIOC detected Domain: ref.name
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detected URL: https://github.com/ajv-validator/ajv/blob/master/lib/definition_schema.js XIOC detected URL: https://github.com/ajv-validator/ajv/blob/master/lib/definition_schema.js
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detected Domain: updates.name XIOC detected Domain: updates.name
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detected Domain: options.name XIOC detected Domain: options.name
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detected Domain: refs.target XIOC detected Domain: refs.target
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detected Domain: strategy.map XIOC detected Domain: strategy.map
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detected Domain: zodpatterns.email XIOC detected Domain: zodpatterns.email
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detected Domain: actualkeys.map XIOC detected Domain: actualkeys.map
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detected Domain: actualvalues.map XIOC detected Domain: actualvalues.map
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detected Domain: result.properties XIOC detected Domain: result.properties
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detected Domain: date.now XIOC detected Domain: date.now
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detected Domain: a.call XIOC detected Domain: a.call
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detected Domain: request.id XIOC detected Domain: request.id
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detected Domain: response.id XIOC detected Domain: response.id
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detected Domain: response.error.data XIOC detected Domain: response.error.data
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detected Domain: a2.call XIOC detected Domain: a2.call
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detected Domain: capabilities.tools XIOC detected Domain: capabilities.tools
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detected Domain: merged.data XIOC detected Domain: merged.data
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detected Domain: def.rest XIOC detected Domain: def.rest
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detected Domain: parsedargs.data XIOC detected Domain: parsedargs.data
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detected Domain: parsedreturns.data XIOC detected Domain: parsedreturns.data
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detected Domain: newctx.data XIOC detected Domain: newctx.data
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detected Domain: def.in XIOC detected Domain: def.in
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detected Domain: cls.name XIOC detected Domain: cls.name
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detected Domain: input.data XIOC detected Domain: input.data
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detected Domain: result.data XIOC detected Domain: result.data
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detected Domain: schema.items.map XIOC detected Domain: schema.items.map
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detected Domain: results.map XIOC detected Domain: results.map
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detected Domain: options.map XIOC detected Domain: options.map
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detected Domain: issues.map XIOC detected Domain: issues.map
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detected Domain: sharedvalue.data XIOC detected Domain: sharedvalue.data
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detected Domain: array.map XIOC detected Domain: array.map
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detected Domain: zodparsedtype.map XIOC detected Domain: zodparsedtype.map
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detected Domain: zodparsedtype.date XIOC detected Domain: zodparsedtype.date
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detected Domain: this.name XIOC detected Domain: this.name
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detected Domain: issue.unionerrors.map XIOC detected Domain: issue.unionerrors.map
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detected Domain: ctx.data XIOC detected Domain: ctx.data
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detected Domain: this.data XIOC detected Domain: this.data
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detected Domain: formats.fast XIOC detected Domain: formats.fast
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detected Domain: group.rules.map XIOC detected Domain: group.rules.map
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detected Domain: compileasync.call XIOC detected Domain: compileasync.call
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detected Domain: resolve.schema.call XIOC detected Domain: resolve.schema.call
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detected Domain: compileschema.call XIOC detected Domain: compileschema.call
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detected Domain: resolve.ids.call XIOC detected Domain: resolve.ids.call
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detected Domain: schema.id XIOC detected Domain: schema.id
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detected Domain: it.schema.properties XIOC detected Domain: it.schema.properties
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detected Domain: entry.id XIOC detected Domain: entry.id
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detected Domain: b.call XIOC detected Domain: b.call
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detected Domain: stdin.off XIOC detected Domain: stdin.off
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detected Domain: macro.call XIOC detected Domain: macro.call
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detected Domain: inline.call XIOC detected Domain: inline.call
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detected Domain: resource.name XIOC detected Domain: resource.name
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detected Domain: cb.post XIOC detected Domain: cb.post
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detected Domain: resolve.call XIOC detected Domain: resolve.call
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detected Domain: resolveschema.call XIOC detected Domain: resolveschema.call
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detected Domain: compile.call XIOC detected Domain: compile.call
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detected Domain: resolverecursive.call XIOC detected Domain: resolverecursive.call
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detected Domain: getjsonpointer.call XIOC detected Domain: getjsonpointer.call
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detected Domain: iterator3.next XIOC detected Domain: iterator3.next
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detected Domain: components.host XIOC detected Domain: components.host
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detected Domain: target.host XIOC detected Domain: target.host
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detected Domain: relative.host XIOC detected Domain: relative.host
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detected Domain: base2.host XIOC detected Domain: base2.host
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detected Domain: wscomponents.secure XIOC detected Domain: wscomponents.secure
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detected Domain: mailtocomponents.to XIOC detected Domain: mailtocomponents.to
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detected Domain: hasownprop.call XIOC detected Domain: hasownprop.call
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detected Domain: object.prototype.tostring.call XIOC detected Domain: object.prototype.tostring.call
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detected Domain: obj.call XIOC detected Domain: obj.call
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detected Domain: array.prototype.slice.call XIOC detected Domain: array.prototype.slice.call
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detected Domain: i.next XIOC detected Domain: i.next
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detected Domain: iterator.next XIOC detected Domain: iterator.next
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detected Domain: iterator2.next XIOC detected Domain: iterator2.next
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detected Domain: www.w3.org XIOC detected Domain: www.w3.org
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detected Domain: www.safaribooksonline.com XIOC detected Domain: www.safaribooksonline.com
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detected Domain: raw.githubusercontent.com XIOC detected Domain: raw.githubusercontent.com
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detected Domain: json-schema.org XIOC detected Domain: json-schema.org
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detected Domain: accounts.google.com XIOC detected Domain: accounts.google.com
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detected Domain: oauth2.googleapis.com XIOC detected Domain: oauth2.googleapis.com
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detected Domain: wiki.debian.org XIOC detected Domain: wiki.debian.org
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detected IP: :: XIOC detected IP: ::
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detected Domain: www.googleapis.com XIOC detected Domain: www.googleapis.com
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detected Domain: calendar.events XIOC detected Domain: calendar.events
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detected Domain: mathiasbynens.be XIOC detected Domain: mathiasbynens.be
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detected Domain: tools.ietf.org XIOC detected Domain: tools.ietf.org
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detected Domain: github.com XIOC detected Domain: github.com
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detected Domain: stackoverflow.com XIOC detected Domain: stackoverflow.com
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detected SHA1 Hash: 9340fd51e48576a75adc919bff65dbc4a5d4c99b XIOC detected SHA1 Hash: 9340fd51e48576a75adc919bff65dbc4a5d4c99b
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detected SHA1 Hash: 47339c03c143bb4ec01a26e721a1b8fe66634ebe XIOC detected SHA1 Hash: 47339c03c143bb4ec01a26e721a1b8fe66634ebe
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detected URL: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html XIOC detected URL: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
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detected Domain: checkcompiling.call XIOC detected Domain: checkcompiling.call
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detected Domain: endcompiling.call XIOC detected Domain: endcompiling.call
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detected Domain: this.logger.info XIOC detected Domain: this.logger.info
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Security Analysis Summary
Security Analysis Overview
@waleedyousaf07/mcp-google-calendar is a mcp extension published by waleedyousaf07. Version 0.1.3 has been analyzed by the Risky Plugins security platform, receiving a risk score of 100/100 (CRITICAL risk) based on 271 security findings.
Risk Assessment
This extension presents critical security risk. Severe issues were detected, potentially including malware indicators, exposed secrets, or dangerous behaviors. Installation is strongly discouraged until these issues are addressed.
Findings Breakdown
- Critical: 6 finding(s)
- High: 56 finding(s)
- Medium: 206 finding(s)
What Was Analyzed
The security assessment covers multiple analysis categories:
- Malware Detection: YARA rule matching against 2,400+ malware signatures
- Secret Detection: Scanning for exposed API keys, tokens, and credentials
- Static Analysis: Code-level security analysis for common vulnerability patterns
- Network Analysis: Detection of suspicious network communications and endpoints
- Obfuscation Detection: Identification of code obfuscation techniques
Developer Information
@waleedyousaf07/mcp-google-calendar is published by waleedyousaf07 on the mcp marketplace.
Recommendation
This extension is not recommended for installation without thorough manual review. Consider alternatives with lower risk scores, or contact the developer to address the identified security concerns.
Source Code Not Available
Source code is not available for this version of the extension.
Frequently Asked Questions
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