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fix(security): prevent prompt injection via issue/PR content in Gemini agent workflows #2780

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fix(security): prevent prompt injection via issue/PR content in Gemini agent workflows #2780

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6e34549
fix(security): prevent prompt injection via issue/PR content in Gemin…
Jun 28, 2026
ed4c83c
fix(security): also remove prompt-injection vars from gemini-plan-exe…
Jun 28, 2026
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4 changes: 2 additions & 2 deletions .github/workflows/gemini-plan-execute.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -44,8 +44,8 @@ jobs:
id: 'run_gemini'
uses: 'google-github-actions/run-gemini-cli@v0' # ratchet:exclude
env:
TITLE: '${{ github.event.pull_request.title }}'
DESCRIPTION: '${{ github.event.pull_request.body }}'
# TITLE and DESCRIPTION intentionally omitted: prompt-injection vector.
# Agent fetches PR content via GitHub API using ISSUE_NUMBER.
EVENT_NAME: '${{ github.event_name }}'
GITHUB_TOKEN: '${{ steps.mint_identity_token.outputs.token || secrets.GITHUB_TOKEN || github.token }}'
IS_PULL_REQUEST: '${{ !!github.event.pull_request }}'
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10 changes: 6 additions & 4 deletions .github/workflows/gemini-review.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -44,8 +44,9 @@ jobs:
id: 'gemini_pr_review'
env:
GITHUB_TOKEN: '${{ steps.mint_identity_token.outputs.token || secrets.GITHUB_TOKEN || github.token }}'
ISSUE_TITLE: '${{ github.event.pull_request.title }}'
ISSUE_BODY: '${{ github.event.pull_request.body }}'
# ISSUE_TITLE and ISSUE_BODY intentionally omitted: passing raw GitHub event
# content as env vars is a prompt-injection vector. The agent should
# fetch PR/issue content via the GitHub API using PULL_REQUEST_NUMBER.
PULL_REQUEST_NUMBER: '${{ github.event.pull_request.number }}'
REPOSITORY: '${{ github.repository }}'
ADDITIONAL_CONTEXT: '${{ inputs.additional_context }}'
Expand Down Expand Up @@ -117,8 +118,9 @@ jobs:
id: 'gemini_security_analysis'
env:
GITHUB_TOKEN: '${{ steps.mint_identity_token.outputs.token || secrets.GITHUB_TOKEN || github.token }}'
ISSUE_TITLE: '${{ github.event.pull_request.title }}'
ISSUE_BODY: '${{ github.event.pull_request.body }}'
# ISSUE_TITLE and ISSUE_BODY intentionally omitted: passing raw GitHub event
# content as env vars is a prompt-injection vector. The agent should
# fetch PR/issue content via the GitHub API using PULL_REQUEST_NUMBER.
PULL_REQUEST_NUMBER: '${{ github.event.pull_request.number }}'
REPOSITORY: '${{ github.repository }}'
ADDITIONAL_CONTEXT: '${{ inputs.additional_context }}'
Expand Down
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