CVE-2026-34243: Github Actions Untrusted Context In Run
This GitHub Actions step interpolates an attacker-controlled `${{ github.event.* }}` (or `${{ github.head_ref }}`) expression directly inside a `run:` shell script. GitHub Actions expands `${{ }}` template expressions before invoking the shell, so attacker-controlled content (e.g., issue/PR/comment/review bodies, commit messages, branch refs) becomes part of
YAMLgreprules fetch cve-2026-34243-github-actions-untrusted-context-in-run --engine opengrepDescription
This GitHub Actions step interpolates an attacker-controlled `${{ github.event.* }}` (or `${{ github.head_ref }}`) expression directly inside a `run:` shell script. GitHub Actions expands `${{ }}` template expressions before invoking the shell, so attacker-controlled content (e.g., issue/PR/comment/review bodies, commit messages, branch refs) becomes part of
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- Context false positives
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Contextual precision
Aggregated from approved scan feedback. False-positive reports describe observed scan contexts, not a global rule verdict.
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Precision details are collecting more signed-in reports before verdict counts or ratios are emphasized.
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