{"id":"CVE-2026-114134","published":"2026-11-05T21:18:36.887","lastModified":"2026-11-05T21:18:36.887","description":"Black is the uncompromising Python code formatter. Prior to 26.10.1, the Black GitHub Action with use_pyproject: true accepts tool.black.required-version from pyproject.toml without validating that it is a released Black version specifier. An attacker who can submit a pull request can change that field to a direct reference to attacker-controlled code, causing the workflow to install and execute the code in the victim repository's GitHub Actions context. This issue is fixed in version 26.10.1.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-829"],"vendors":[],"products":[],"references":[{"url":"https://github.com/psf/black/commit/ac1f71563aeccf73cf13ece00f231d9d6c66a514","tags":[]},{"url":"https://github.com/psf/black/pull/5510","tags":[]},{"url":"https://github.com/psf/black/security/advisories/GHSA-cg8m-r9f2-5wm2","tags":[]}],"exploitRefs":[{"url":"https://github.com/psf/black/commit/ac1f71563aeccf73cf13ece00f231d9d6c66a514","tags":[]},{"url":"https://github.com/psf/black/pull/5510","tags":[]},{"url":"https://github.com/psf/black/security/advisories/GHSA-cg8m-r9f2-5wm2","tags":[]}],"hasPoc":true,"ai":null}