CVE-2026-39866

Published Apr 20, 2026·Updated Jun 17, 2026

NVD Description

Lawnchair is a free, open-source home app for Android. Prior to commit fcba413f55dd47f8a3921445252849126c6266b2, command injection in release_update.yml workflow dispatch input allows arbitrary code execution. Commit fcba413f55dd47f8a3921445252849126c6266b2 patches the issue.

Public Exploits & PoCs1 found

PoC: gha-lab-360f77d0d4

Authorized security-research lab: reproduction of CVE-2026-39866 (GHSA-9prc-pp2c-3427) — workflow_dispatch input template injection in .github/workflows/release_update.yml of LawnchairLauncher/lawnchair @ b089bae8c007f36a8ce0346725182a107d97cd05. Snapshot pinned to the vulnerable commit; owner-gated sign-info step retargeted for the lab.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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