Is "@waleedyousaf07/mcp-google-calendar" on MCP Registry Safe to Install?

waleedyousaf07 · mcp · v0.1.3

Thin Google Calendar MCP server for MCP-compatible agents.

Risk Assessment

Analyzed
100
out of 100
CRITICAL

271 security findings detected across all analyzers

MCP server analyzed for tool poisoning, prompt injection, and data exfiltration

Severity Breakdown

6
Critical
56
High
206
Medium
0
Low
0
Info

Finding Categories

41
Malware Signatures
12
Secrets
172
IoC Indicators

YARA Rules Matched

10 rules(41 hits)
NoUseWeakRandom postinstall system command postinstall file download postinstall network communication postinstall file manipulation UsingShellInterpreterWhenExecutingOSCommands postinstall obfuscation postinstall crypto operations credential env files postinstall environment access

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

Thin Google Calendar MCP server for MCP-compatible agents.

Detailed Findings

69 total

YARA Rule Matches

10 rules

Indicators of Compromise

Network indicators, suspicious strings, and potential IoCs extracted during analysis

URLs
49
IP Addresses
7
Domains
119
Strings
172

All Indicators · 172

Domain
detected Domain: request.params.argument.name

XIOC detected Domain: request.params.argument.name

extracted_from_files

Domain
detected Domain: compile2.call

XIOC detected Domain: compile2.call

extracted_from_files

URL
detected URL: https://base64.guru/standards/base64url

XIOC detected URL: https://base64.guru/standards/base64url

extracted_from_files

URL
detected URL: https://stackoverflow.com/a/3143231

XIOC detected URL: https://stackoverflow.com/a/3143231

extracted_from_files

URL
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.

extracted_from_files

URL
detected URL: https://github.com/colinhacks/zod/issues/2433

XIOC detected URL: https://github.com/colinhacks/zod/issues/2433

extracted_from_files

URL
detected URL: https://github.com/colinhacks/zod/commit/9340fd51e48576a75adc919bff65dbc4a5d4c99b

XIOC detected URL: https://github.com/colinhacks/zod/commit/9340fd51e48576a75adc919bff65dbc4a5d4c99b

extracted_from_files

URL
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',

extracted_from_files

URL
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#

extracted_from_files

URL
detected URL: http://json-schema.org/draft-07/schema';

XIOC detected URL: http://json-schema.org/draft-07/schema';

extracted_from_files

URL
detected URL: https://github.com/epoberezkin/fast-json-stable-stringify)

XIOC detected URL: https://github.com/epoberezkin/fast-json-stable-stringify)

extracted_from_files

URL
detected URL: http://json-schema.org/schema']

XIOC detected URL: http://json-schema.org/schema']

extracted_from_files

URL
detected URL: https://stackoverflow.com/a/46181/1550155

XIOC detected URL: https://stackoverflow.com/a/46181/1550155

extracted_from_files

URL
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

extracted_from_files

URL
detected URL: https://tools.ietf.org/html/rfc6901

XIOC detected URL: https://tools.ietf.org/html/rfc6901

extracted_from_files

URL
detected URL: https://tools.ietf.org/html/rfc3986#appendix-A

XIOC detected URL: https://tools.ietf.org/html/rfc3986#appendix-A

extracted_from_files

URL
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

extracted_from_files

URL
detected URL: https://tools.ietf.org/html/rfc3339#appendix-C

XIOC detected URL: https://tools.ietf.org/html/rfc3339#appendix-C

extracted_from_files

URL
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

extracted_from_files

URL
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#'

extracted_from_files

URL
detected URL: http://json-schema.org/draft-07/schema#

XIOC detected URL: http://json-schema.org/draft-07/schema#

extracted_from_files

URL
detected URL: https://github.com/eslint/eslint/issues/7983.

XIOC detected URL: https://github.com/eslint/eslint/issues/7983.

extracted_from_files

URL
detected URL: http://tools.ietf.org/html/rfc3339#section-5.6

XIOC detected URL: http://tools.ietf.org/html/rfc3339#section-5.6

extracted_from_files

URL
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

extracted_from_files

URL
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

extracted_from_files

URL
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

extracted_from_files

URL
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

extracted_from_files

URL
detected URL: http://tools.ietf.org/html/rfc4122

XIOC detected URL: http://tools.ietf.org/html/rfc4122

extracted_from_files

URL
detected URL: https://tools.ietf.org/html/rfc3492#section-3.4

XIOC detected URL: https://tools.ietf.org/html/rfc3492#section-3.4

extracted_from_files

URL
detected URL: https://mathiasbynens.be/notes/javascript-encoding

XIOC detected URL: https://mathiasbynens.be/notes/javascript-encoding

extracted_from_files

URL
detected URL: https://github.com/bestiejs/punycode.js

XIOC detected URL: https://github.com/bestiejs/punycode.js

extracted_from_files

URL
detected URL: https://tools.ietf.org/html/rfc6570

XIOC detected URL: https://tools.ietf.org/html/rfc6570

extracted_from_files

URL
detected URL: https://gist.github.com/dperini/729294

XIOC detected URL: https://gist.github.com/dperini/729294

extracted_from_files

URL
detected URL: https://mathiasbynens.be/demo/url-regex

XIOC detected URL: https://mathiasbynens.be/demo/url-regex

extracted_from_files

URL
detected URL: https://www.googleapis.com/auth/calendar.events

XIOC detected URL: https://www.googleapis.com/auth/calendar.events

extracted_from_files

URL
detected URL: https://www.googleapis.com/auth/calendar.calendarlist.readonly

XIOC detected URL: https://www.googleapis.com/auth/calendar.calendarlist.readonly

extracted_from_files

URL
detected URL: http://127.0.0.1:$

XIOC detected URL: http://127.0.0.1:$

extracted_from_files

URL
detected URL: https://wiki.debian.org/XDGBaseDirectorySpecification#state

XIOC detected URL: https://wiki.debian.org/XDGBaseDirectorySpecification#state

extracted_from_files

URL
detected URL: http://github.com/garycourt/uri-js

XIOC detected URL: http://github.com/garycourt/uri-js

extracted_from_files

Domain
detected Domain: object.prototype.hasownproperty.call

XIOC detected Domain: object.prototype.hasownproperty.call

extracted_from_files

IP
detected IP: 127.0.0.1

XIOC detected IP: 127.0.0.1

extracted_from_files

URL
detected URL: https://json-schema.org/draft/2019-09/schema#

XIOC detected URL: https://json-schema.org/draft/2019-09/schema#

extracted_from_files

URL
detected URL: https://www.googleapis.com/calendar/v3

XIOC detected URL: https://www.googleapis.com/calendar/v3

extracted_from_files

URL
detected URL: https://accounts.google.com/o/oauth2/v2/auth

XIOC detected URL: https://accounts.google.com/o/oauth2/v2/auth

extracted_from_files

URL
detected URL: https://oauth2.googleapis.com/token

XIOC detected URL: https://oauth2.googleapis.com/token

extracted_from_files

Domain
detected Domain: compindex.call

XIOC detected Domain: compindex.call

extracted_from_files

URL
detected URL: http://json-schema.org/draft-07/schema

XIOC detected URL: http://json-schema.org/draft-07/schema

extracted_from_files

URL
detected URL: http://json-schema.org/schema

XIOC detected URL: http://json-schema.org/schema

extracted_from_files

URL
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

extracted_from_files

URL
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)

extracted_from_files

URL
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

extracted_from_files

Domain
detected Domain: readme.md

XIOC detected Domain: readme.md

extracted_from_files

Domain
detected Domain: gmail.com

XIOC detected Domain: gmail.com

extracted_from_files

Domain
detected Domain: tcomponents.host

XIOC detected Domain: tcomponents.host

extracted_from_files

Domain
detected Domain: ttarget.host

XIOC detected Domain: ttarget.host

extracted_from_files

Domain
detected Domain: base.host

XIOC detected Domain: base.host

extracted_from_files

Domain
detected Domain: resolve.id

XIOC detected Domain: resolve.id

extracted_from_files

Domain
detected Domain: nformats.fast

XIOC detected Domain: nformats.fast

extracted_from_files

Domain
detected Domain: index.js.map

XIOC detected Domain: index.js.map

extracted_from_files

Domain
detected Domain: cli.js.map

XIOC detected Domain: cli.js.map

extracted_from_files

Domain
detected Domain: gist.github.com

XIOC detected Domain: gist.github.com

extracted_from_files

Domain
detected Domain: jmrware.com

XIOC detected Domain: jmrware.com

extracted_from_files

Domain
detected Domain: thekevinscott.com

XIOC detected Domain: thekevinscott.com

extracted_from_files

Domain
detected Domain: base64.guru

XIOC detected Domain: base64.guru

extracted_from_files

Domain
detected Domain: specifications.freedesktop.org

XIOC detected Domain: specifications.freedesktop.org

extracted_from_files

Domain
detected Domain: twscomponents.secure

XIOC detected Domain: twscomponents.secure

extracted_from_files

Domain
detected Domain: event.organizer.email

XIOC detected Domain: event.organizer.email

extracted_from_files

Domain
detected Domain: value.date

XIOC detected Domain: value.date

extracted_from_files

Domain
detected Domain: attendees.map

XIOC detected Domain: attendees.map

extracted_from_files

Domain
detected Domain: this.tokenstore.save

XIOC detected Domain: this.tokenstore.save

extracted_from_files

Domain
detected Domain: value.start.date

XIOC detected Domain: value.start.date

extracted_from_files

Domain
detected Domain: value.end.date

XIOC detected Domain: value.end.date

extracted_from_files

Domain
detected Domain: logger.info

XIOC detected Domain: logger.info

extracted_from_files

Domain
detected Domain: registeredresource.name

XIOC detected Domain: registeredresource.name

extracted_from_files

URL
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

extracted_from_files

Domain
detected Domain: event.id

XIOC detected Domain: event.id

extracted_from_files

Domain
detected Domain: attendee.email

XIOC detected Domain: attendee.email

extracted_from_files

Domain
detected Domain: def.items.map

XIOC detected Domain: def.items.map

extracted_from_files

Domain
detected Domain: request.params.name

XIOC detected Domain: request.params.name

extracted_from_files

Domain
detected Domain: parseresult.data

XIOC detected Domain: parseresult.data

extracted_from_files

Domain
detected Domain: ref.name

XIOC detected Domain: ref.name

extracted_from_files

URL
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

extracted_from_files

Domain
detected Domain: updates.name

XIOC detected Domain: updates.name

extracted_from_files

Domain
detected Domain: options.name

XIOC detected Domain: options.name

extracted_from_files

Domain
detected Domain: refs.target

XIOC detected Domain: refs.target

extracted_from_files

Domain
detected Domain: strategy.map

XIOC detected Domain: strategy.map

extracted_from_files

Domain
detected Domain: zodpatterns.email

XIOC detected Domain: zodpatterns.email

extracted_from_files

Domain
detected Domain: actualkeys.map

XIOC detected Domain: actualkeys.map

extracted_from_files

Domain
detected Domain: actualvalues.map

XIOC detected Domain: actualvalues.map

extracted_from_files

Domain
detected Domain: result.properties

XIOC detected Domain: result.properties

extracted_from_files

Domain
detected Domain: date.now

XIOC detected Domain: date.now

extracted_from_files

Domain
detected Domain: a.call

XIOC detected Domain: a.call

extracted_from_files

Domain
detected Domain: request.id

XIOC detected Domain: request.id

extracted_from_files

Domain
detected Domain: response.id

XIOC detected Domain: response.id

extracted_from_files

Domain
detected Domain: response.error.data

XIOC detected Domain: response.error.data

extracted_from_files

Domain
detected Domain: a2.call

XIOC detected Domain: a2.call

extracted_from_files

Domain
detected Domain: capabilities.tools

XIOC detected Domain: capabilities.tools

extracted_from_files

Domain
detected Domain: merged.data

XIOC detected Domain: merged.data

extracted_from_files

Domain
detected Domain: def.rest

XIOC detected Domain: def.rest

extracted_from_files

Domain
detected Domain: parsedargs.data

XIOC detected Domain: parsedargs.data

extracted_from_files

Domain
detected Domain: parsedreturns.data

XIOC detected Domain: parsedreturns.data

extracted_from_files

Domain
detected Domain: newctx.data

XIOC detected Domain: newctx.data

extracted_from_files

Domain
detected Domain: def.in

XIOC detected Domain: def.in

extracted_from_files

Domain
detected Domain: cls.name

XIOC detected Domain: cls.name

extracted_from_files

Domain
detected Domain: input.data

XIOC detected Domain: input.data

extracted_from_files

Domain
detected Domain: result.data

XIOC detected Domain: result.data

extracted_from_files

Domain
detected Domain: schema.items.map

XIOC detected Domain: schema.items.map

extracted_from_files

Domain
detected Domain: results.map

XIOC detected Domain: results.map

extracted_from_files

Domain
detected Domain: options.map

XIOC detected Domain: options.map

extracted_from_files

Domain
detected Domain: issues.map

XIOC detected Domain: issues.map

extracted_from_files

Domain
detected Domain: sharedvalue.data

XIOC detected Domain: sharedvalue.data

extracted_from_files

Domain
detected Domain: array.map

XIOC detected Domain: array.map

extracted_from_files

Domain
detected Domain: zodparsedtype.map

XIOC detected Domain: zodparsedtype.map

extracted_from_files

Domain
detected Domain: zodparsedtype.date

XIOC detected Domain: zodparsedtype.date

extracted_from_files

Domain
detected Domain: this.name

XIOC detected Domain: this.name

extracted_from_files

Domain
detected Domain: issue.unionerrors.map

XIOC detected Domain: issue.unionerrors.map

extracted_from_files

Domain
detected Domain: ctx.data

XIOC detected Domain: ctx.data

extracted_from_files

Domain
detected Domain: this.data

XIOC detected Domain: this.data

extracted_from_files

Domain
detected Domain: formats.fast

XIOC detected Domain: formats.fast

extracted_from_files

Domain
detected Domain: group.rules.map

XIOC detected Domain: group.rules.map

extracted_from_files

Domain
detected Domain: compileasync.call

XIOC detected Domain: compileasync.call

extracted_from_files

Domain
detected Domain: resolve.schema.call

XIOC detected Domain: resolve.schema.call

extracted_from_files

Domain
detected Domain: compileschema.call

XIOC detected Domain: compileschema.call

extracted_from_files

Domain
detected Domain: resolve.ids.call

XIOC detected Domain: resolve.ids.call

extracted_from_files

Domain
detected Domain: schema.id

XIOC detected Domain: schema.id

extracted_from_files

Domain
detected Domain: it.schema.properties

XIOC detected Domain: it.schema.properties

extracted_from_files

Domain
detected Domain: entry.id

XIOC detected Domain: entry.id

extracted_from_files

Domain
detected Domain: b.call

XIOC detected Domain: b.call

extracted_from_files

Domain
detected Domain: stdin.off

XIOC detected Domain: stdin.off

extracted_from_files

Domain
detected Domain: macro.call

XIOC detected Domain: macro.call

extracted_from_files

Domain
detected Domain: inline.call

XIOC detected Domain: inline.call

extracted_from_files

Domain
detected Domain: resource.name

XIOC detected Domain: resource.name

extracted_from_files

Domain
detected Domain: cb.post

XIOC detected Domain: cb.post

extracted_from_files

Domain
detected Domain: resolve.call

XIOC detected Domain: resolve.call

extracted_from_files

Domain
detected Domain: resolveschema.call

XIOC detected Domain: resolveschema.call

extracted_from_files

Domain
detected Domain: compile.call

XIOC detected Domain: compile.call

extracted_from_files

Domain
detected Domain: resolverecursive.call

XIOC detected Domain: resolverecursive.call

extracted_from_files

Domain
detected Domain: getjsonpointer.call

XIOC detected Domain: getjsonpointer.call

extracted_from_files

Domain
detected Domain: iterator3.next

XIOC detected Domain: iterator3.next

extracted_from_files

Domain
detected Domain: components.host

XIOC detected Domain: components.host

extracted_from_files

Domain
detected Domain: target.host

XIOC detected Domain: target.host

extracted_from_files

Domain
detected Domain: relative.host

XIOC detected Domain: relative.host

extracted_from_files

Domain
detected Domain: base2.host

XIOC detected Domain: base2.host

extracted_from_files

Domain
detected Domain: wscomponents.secure

XIOC detected Domain: wscomponents.secure

extracted_from_files

Domain
detected Domain: mailtocomponents.to

XIOC detected Domain: mailtocomponents.to

extracted_from_files

Domain
detected Domain: hasownprop.call

XIOC detected Domain: hasownprop.call

extracted_from_files

Domain
detected Domain: object.prototype.tostring.call

XIOC detected Domain: object.prototype.tostring.call

extracted_from_files

Domain
detected Domain: obj.call

XIOC detected Domain: obj.call

extracted_from_files

Domain
detected Domain: array.prototype.slice.call

XIOC detected Domain: array.prototype.slice.call

extracted_from_files

Domain
detected Domain: i.next

XIOC detected Domain: i.next

extracted_from_files

Domain
detected Domain: iterator.next

XIOC detected Domain: iterator.next

extracted_from_files

Domain
detected Domain: iterator2.next

XIOC detected Domain: iterator2.next

extracted_from_files

Domain
detected Domain: www.w3.org

XIOC detected Domain: www.w3.org

extracted_from_files

Domain
detected Domain: www.safaribooksonline.com

XIOC detected Domain: www.safaribooksonline.com

extracted_from_files

Domain
detected Domain: raw.githubusercontent.com

XIOC detected Domain: raw.githubusercontent.com

extracted_from_files

Domain
detected Domain: json-schema.org

XIOC detected Domain: json-schema.org

extracted_from_files

Domain
detected Domain: accounts.google.com

XIOC detected Domain: accounts.google.com

extracted_from_files

Domain
detected Domain: oauth2.googleapis.com

XIOC detected Domain: oauth2.googleapis.com

extracted_from_files

Domain
detected Domain: wiki.debian.org

XIOC detected Domain: wiki.debian.org

extracted_from_files

IP
detected IP: ::

XIOC detected IP: ::

extracted_from_files

Domain
detected Domain: www.googleapis.com

XIOC detected Domain: www.googleapis.com

extracted_from_files

Domain
detected Domain: calendar.events

XIOC detected Domain: calendar.events

extracted_from_files

Domain
detected Domain: mathiasbynens.be

XIOC detected Domain: mathiasbynens.be

extracted_from_files

Domain
detected Domain: tools.ietf.org

XIOC detected Domain: tools.ietf.org

extracted_from_files

Domain
detected Domain: github.com

XIOC detected Domain: github.com

extracted_from_files

Domain
detected Domain: stackoverflow.com

XIOC detected Domain: stackoverflow.com

extracted_from_files

Hash
detected SHA1 Hash: 9340fd51e48576a75adc919bff65dbc4a5d4c99b

XIOC detected SHA1 Hash: 9340fd51e48576a75adc919bff65dbc4a5d4c99b

extracted_from_files

Hash
detected SHA1 Hash: 47339c03c143bb4ec01a26e721a1b8fe66634ebe

XIOC detected SHA1 Hash: 47339c03c143bb4ec01a26e721a1b8fe66634ebe

extracted_from_files

URL
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

extracted_from_files

Domain
detected Domain: checkcompiling.call

XIOC detected Domain: checkcompiling.call

extracted_from_files

Domain
detected Domain: endcompiling.call

XIOC detected Domain: endcompiling.call

extracted_from_files

Domain
detected Domain: this.logger.info

XIOC detected Domain: this.logger.info

extracted_from_files

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.

Frequently Asked Questions