CVE-2026-45793

{"id": "CVE-2026-45793", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45793", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-15T18:11:02.102503Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "composer", "product": "composer", "versions": [{"status": "affected", "version": ">= 1.0, < 1.10.28"}, {"status": "affected", "version": ">= 2.0.0, < 2.2.28"}, {"status": "affected", "version": ">= 2.3.0, < 2.9.8"}]}]}], "published": "2026-07-15T17:16:48.173", "references": [{"url": "https://github.com/composer/composer/commit/3f5e7f9fbfa541137d6d1d5643ec3b718e9d5039", "source": "security-advisories@github.com"}, {"url": "https://github.com/composer/composer/commit/65e6390c49f1a11cd8b660d81822086db51fe2d1", "source": "security-advisories@github.com"}, {"url": "https://github.com/composer/composer/commit/e66c8fdb7ff5409bd2f358c5f194038e49e93714", "source": "security-advisories@github.com"}, {"url": "https://github.com/composer/composer/pull/12853", "source": "security-advisories@github.com"}, {"url": "https://github.com/composer/composer/pull/12855", "source": "security-advisories@github.com"}, {"url": "https://github.com/composer/composer/releases/tag/1.10.28", "source": "security-advisories@github.com"}, {"url": "https://github.com/composer/composer/releases/tag/2.2.28", "source": "security-advisories@github.com"}, {"url": "https://github.com/composer/composer/releases/tag/2.9.8", "source": "security-advisories@github.com"}, {"url": "https://github.com/composer/composer/security/advisories/GHSA-f9f8-rm49-7jv2", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-200"}]}], "descriptions": [{"lang": "en", "value": "Composer is a dependency Manager for the PHP language. Prior to 1.10.28, 2.2.28, and 2.9.8, Composer\\IO\\BaseIO::loadConfiguration() validates GitHub OAuth tokens with the regex ^[.A-Za-z0-9_]+$ and interpolates rejected tokens into an UnexpectedValueException; GitHub Actions GITHUB_TOKEN values using the ghs_<id>_<base64url-JWT> format can contain -, fail validation, and be disclosed to stderr or CI logs. This issue is fixed in versions 1.10.28, 2.2.28, and 2.9.8."}], "lastModified": "2026-07-15T20:54:43.733", "sourceIdentifier": "security-advisories@github.com"}