{"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"}}}}

{}

{"affected": [{"affectedData": [{"product": "black", "vendor": "psf", "versions": [{"status": "affected", "version": "< 26.10.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-114134", "lastModified": "2026-11-05T21:18:36.887", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-05T21:18:36.887", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/psf/black/commit/ac1f71563aeccf73cf13ece00f231d9d6c66a514"}, {"source": "security-advisories@github.com", "url": "https://github.com/psf/black/pull/5510"}, {"source": "security-advisories@github.com", "url": "https://github.com/psf/black/security/advisories/GHSA-cg8m-r9f2-5wm2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-829"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,26.10.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "black", "source": "cna", "vendor": "psf"}, "product": "black", "vendor": "psf"}], "created": "2026-11-05T21:45:04.829852+00:00", "updated": "2026-11-05T22:15:14.895880+00:00", "vendors": ["psf", "psf$PRODUCT$black"]}