{"api_version":"1","generated_at":"2026-09-25T22:12:10+00:00","cve":"CVE-2026-67421","urls":{"html":"https://cve.report/CVE-2026-67421","api":"https://cve.report/api/cve/CVE-2026-67421.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-67421","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-67421"},"summary":{"title":"RabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth Error Handling","description":"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-09-25 17:17:14","updated_at":"2026-09-25 20:17:39"},"problem_types":["CWE-862","CWE-862 CWE-862: Missing 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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.","Type":"Description","Title":"RabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth Err"}]}}}