{"id":"DEBIAN-CVE-2026-67421","details":"RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, RabbitMQ Management rendered an AMQP authorization-error reason containing an attacker-controlled queue name as HTML when the OAuth management UI was enabled. Exploitation requires an attacker with queue configure permission, a management administrator who can see but cannot read that queue, and the administrator clicking Get Message(s). A queue name containing a base element can then retarget the automatic relative refresh because the Content Security Policy omits base-uri and connect-src, and an attacker endpoint that permits the management origin through CORS can receive the victim's Authorization header. This issue is fixed in versions 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5.","modified":"2026-09-29T08:47:30.406129706Z","published":"2026-09-25T17:17:14.120Z","upstream":["CVE-2026-67421"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-67421"}],"affected":[{"package":{"name":"rabbitmq-server","ecosystem":"Debian:12","purl":"pkg:deb/debian/rabbitmq-server?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.10.8-1.1","3.10.8-1.1+deb12u1","3.10.8-2","3.10.8-3","3.10.8-4","3.12.1-1","3.12.1-1.1","4.0.5-1","4.0.5-10","4.0.5-11","4.0.5-12","4.0.5-13","4.0.5-14","4.0.5-2","4.0.5-3","4.0.5-4","4.0.5-5","4.0.5-6","4.0.5-8","4.0.5-9","4.3.0-1","4.3.0-2","4.3.0-3","4.3.2-1","4.3.2-2","4.3.2-3","4.3.2-4","4.3.2-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67421.json"}},{"package":{"name":"rabbitmq-server","ecosystem":"Debian:13","purl":"pkg:deb/debian/rabbitmq-server?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.5-10","4.0.5-11","4.0.5-12","4.0.5-13","4.0.5-14","4.0.5-6","4.0.5-6+deb13u1","4.0.5-6+deb13u2","4.0.5-8","4.0.5-9","4.3.0-1","4.3.0-2","4.3.0-3","4.3.2-1","4.3.2-2","4.3.2-3","4.3.2-4","4.3.2-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67421.json"}},{"package":{"name":"rabbitmq-server","ecosystem":"Debian:14","purl":"pkg:deb/debian/rabbitmq-server?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.5-10","4.0.5-11","4.0.5-12","4.0.5-13","4.0.5-14","4.0.5-6","4.0.5-8","4.0.5-9","4.3.0-1","4.3.0-2","4.3.0-3","4.3.2-1","4.3.2-2","4.3.2-3","4.3.2-4","4.3.2-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67421.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:H/SI:L/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"}]}