Versioned security assessment

Report ID: SA-30C73EAC

7/5/2026, 2:51:14 PM

gws-calendar security assessment v4

Skill Security Certification Report

Audit History
Audit model: codex Historical report
Skill name
gws-calendar
Version
v0.22.0
Maintainer
googleworkspace
Source
github.com/googleworkspace/cli/tree/main/skills/gws-calendar/
Coverage
1 Files scanned · 110 Lines analyzed
Policy version
Unavailable

Highest confirmed finding severity

Medium

1 confirmed security finding requires attention.

Installation context

Historical evidence

This report may not describe the currently installable artifact. Open the current Skill page for install guidance.

Open current Skill page

This report does not block or authorize the manifest or ZIP.

Static findings for Ruby or shell backtick execution and path traversal are false positives caused by Markdown formatting, command examples, and relative links. The main residual risk is semantic: the skill exposes destructive Google Calendar operations that require careful confirmation and authorized credentials.

Report position

Historical report

Open audit history before using this report to install.

Audit attestation

Not attestable

The required immutable binding is incomplete.

Human verification

Not verified

No human verification is recorded for this report.

Coverage

1 Files scanned · 110 Lines analyzed

1 item shown for review

Limitations

This report does not claim runtime or sandbox execution and does not prove the absence of side effects.

Evidence chain

Follow the evidence from source binding to the install contract. Available evidence supports verification; it is not a safety guarantee.

  1. Source

    Commit and path bound

  2. Artifact

    Content and tree hashes bound

  3. Audit

    Complete

  4. Install contract

    Open manifest to verify

    Open manifest

Capabilities observed

Observed means this report recorded supporting evidence. Not recorded does not prove that a capability is absent.

Contains scripts

May execute code included with the Skill.

Not recorded by this audit

Network access

May connect to external services.

Not recorded by this audit

Filesystem access

May read or write local files.

Observed in 3 evidence locations

Env variables

May read values from the process environment.

Not recorded by this audit

External commands

May invoke commands or programs outside the Skill.

Observed in 45 evidence locations

Risk findings

Confirmed security concerns are separated from items that still need review.

Confirmed security concerns (1)

RISK-001 Medium
SKILL.md:33-39SKILL.md:53-54SKILL.md:73-84
Destructive Calendar Operations Available
The skill documents delete, clear, update, patch, and ACL methods that can remove events, calendars, or access rules when used with authorized credentials.
The file explicitly lists deletion and mutation methods for ACLs, calendars, and events. These are legitimate Calendar API capabilities, but misuse can cause data loss or permission changes.

Remediation

Suggested fixes recorded by this audit. Applying them is the maintainer’s responsibility.

  1. FIX-001
    Medium
    Destructive calendar and ACL operations can remove events, calendars, or access rules.
    Add explicit guidance to confirm the calendar, event, and ACL target before delete, clear, patch, update, or move operations.
  2. FIX-002
    Low
    Shared prerequisite instructions are referenced through a relative parent path.
    Package or link the shared security rules in a stable marketplace-visible location so reviewers and users can inspect them easily.

Expert evidence

Immutable subject identity, scanner metadata, dismissed matches, and source-level evidence.

Artifact subject

Marketplace commit
30c73eac2afe762f6aa9c4553158769369d47351
Content hash
a7841a3cf16c43c3505f33aacca966164c9bb568a4da712173cb7b31fc2b3727
Tree hash
134d53a812771d87e7f57a1aa580fa1fac0925c539284148ce2284a147d0b422
Skill path
skills/googleworkspace/gws-calendar
Audit payload hash
8242ece0f64cc6cfaaca3a0c67f997ff

Analysis metadata

Audit model: codex

Analysis state: Complete

Scope is limited to the recorded files, lines, methods, and evidence. No runtime or sandbox execution is claimed.

Verify and export

JSON report CITATION.cff SARIF 2.1.0 Signed installation manifest Source

The manifest and lockfile bind install artifacts to cryptographic hashes. This integrity claim is separate from the security assessment.

Audit attestation: not_attestable