{"id":"DEBIAN-CVE-2026-84361","details":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and 2.10.3, a malicious dependency package from a custom Composer repository or an untrusted composer.lock file could set source.type to perforce and source.url to an rsh: or jsh: P4PORT value. When the Perforce p4 client was installed and Composer installed the package from source through composer install or composer update, including --prefer-source, Composer\\Util\\Perforce passed the address to p4 without validation, causing p4 to run a local command with the privileges of the user or CI account. Packagist.org does not permit Perforce source metadata. This issue is fixed in versions 2.2.30 and 2.10.3.","modified":"2026-09-10T08:47:25.927295489Z","published":"2026-09-01T21:18:47.023Z","upstream":["CVE-2026-84361"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-84361"}],"affected":[{"package":{"name":"composer","ecosystem":"Debian:12","purl":"pkg:deb/debian/composer?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-1","2.10.0~rc1-1","2.10.0~rc1-2","2.10.0~rc1-3","2.10.0~rc2-1","2.10.1-1","2.10.1-2","2.10.2-1","2.10.3-1","2.5.5-1","2.5.5-1+deb12u1","2.5.5-1+deb12u2","2.5.5-1+deb12u3","2.5.5-1+deb12u4","2.5.5-1+deb12u5","2.5.6-1","2.5.7-1","2.5.8-1","2.6.2-1","2.6.3-1","2.6.4-1","2.6.5-1","2.6.6-1","2.7.1-1","2.7.1-2","2.7.2-1","2.7.4-1","2.7.6-1","2.7.6-2","2.7.6-3","2.7.7-1","2.7.7-2","2.7.8-1","2.7.9-1","2.8.0-1","2.8.1-1","2.8.10-1","2.8.11-1","2.8.11-2","2.8.12-1","2.8.2-1","2.8.3-1","2.8.4-1","2.8.4-2","2.8.4-3","2.8.5-1","2.8.6-1","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-2026-84361.json"}},{"package":{"name":"composer","ecosystem":"Debian:13","purl":"pkg:deb/debian/composer?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-1","2.10.0~rc1-1","2.10.0~rc1-2","2.10.0~rc1-3","2.10.0~rc2-1","2.10.1-1","2.10.1-2","2.10.2-1","2.10.3-1","2.8.10-1","2.8.11-1","2.8.11-2","2.8.12-1","2.8.8-1","2.8.8-1+deb13u1","2.8.8-1+deb13u2","2.8.8-1+deb13u3","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-2026-84361.json"}},{"package":{"name":"composer","ecosystem":"Debian:14","purl":"pkg:deb/debian/composer?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.3-1"}]}],"versions":["2.10.0-1","2.10.0~rc1-1","2.10.0~rc1-2","2.10.0~rc1-3","2.10.0~rc2-1","2.10.1-1","2.10.1-2","2.10.2-1","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-2026-84361.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/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"}]}