{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-114134","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-20T21:53:58.473Z","datePublished":"2026-11-05T20:22:14.467Z","dateUpdated":"2026-11-05T20:22:14.467Z"},"containers":{"cna":{"title":"Black: GitHub Action installs unvalidated required-version from pyproject.toml","problemTypes":[{"descriptions":[{"cweId":"CWE-829","lang":"en","description":"CWE-829: Inclusion of Functionality from Untrusted Control Sphere","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/psf/black/security/advisories/GHSA-cg8m-r9f2-5wm2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/psf/black/security/advisories/GHSA-cg8m-r9f2-5wm2"},{"name":"https://github.com/psf/black/pull/5510","tags":["x_refsource_MISC"],"url":"https://github.com/psf/black/pull/5510"},{"name":"https://github.com/psf/black/commit/ac1f71563aeccf73cf13ece00f231d9d6c66a514","tags":["x_refsource_MISC"],"url":"https://github.com/psf/black/commit/ac1f71563aeccf73cf13ece00f231d9d6c66a514"}],"affected":[{"vendor":"psf","product":"black","versions":[{"version":"< 26.10.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-05T20:22:14.467Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-cg8m-r9f2-5wm2","discovery":"UNKNOWN"}}}}