{"schemaVersion":3,"id":"CVE-2026-45793","aliases":["UBUNTU-CVE-2026-45793","DEBIAN-CVE-2026-45793","openSUSE-SU-2026:11300-1"],"status":"published","duplicateOf":null,"title":null,"description":"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. 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