{"id":"DEBIAN-CVE-2026-45793","details":"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_\u003cid\u003e_\u003cbase64url-JWT\u003e 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.","modified":"2026-09-01T16:06:45.401247777Z","published":"2026-07-15T17:16:48.173Z","upstream":["CVE-2026-45793"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-45793"}],"affected":[{"package":{"name":"composer","ecosystem":"Debian:12","purl":"pkg:deb/debian/composer?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.5-1+deb12u5"}]}],"versions":["2.5.5-1","2.5.5-1+deb12u1","2.5.5-1+deb12u2","2.5.5-1+deb12u3","2.5.5-1+deb12u4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45793.json"}},{"package":{"name":"composer","ecosystem":"Debian:13","purl":"pkg:deb/debian/composer?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.8-1+deb13u3"}]}],"versions":["2.8.8-1","2.8.8-1+deb13u1","2.8.8-1+deb13u2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45793.json"}},{"package":{"name":"composer","ecosystem":"Debian:14","purl":"pkg:deb/debian/composer?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.0-1"}]}],"versions":["2.10.0~rc1-1","2.10.0~rc1-2","2.10.0~rc1-3","2.10.0~rc2-1","2.8.10-1","2.8.11-1","2.8.11-2","2.8.12-1","2.8.8-1","2.8.9-1","2.9.0~rc1-1","2.9.1-1","2.9.2-1","2.9.3-1","2.9.4-1","2.9.5-1","2.9.7-1","2.9.8-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45793.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}