{"id":"CVE-2026-44839","summary":"RabbitMQ: Unsanitized vhost names allow for XSS in management UI","details":"RabbitMQ is a messaging and streaming broker. From 3.7.0 to before 4.1.2 and 4.0.13,  This vulnerability is fixed in 4.1.2 and 4.0.13.","aliases":["BIT-rabbitmq-2026-44839","GHSA-fh5r-jpm3-fjwp"],"modified":"2026-07-08T08:13:29.954376505Z","published":"2026-05-27T15:07:10.366Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44839.json","unresolved_ranges":[{"extracted_events":[{"introduced":"3.7.0"},{"fixed":"4.0.13"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"GitHub_M","cwe_ids":["CWE-80"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44839.json"},{"type":"ADVISORY","url":"https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-fh5r-jpm3-fjwp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44839"},{"type":"FIX","url":"https://github.com/rabbitmq/rabbitmq-server/commit/7f54319279d1ece161ae0b4cdc6f0e58a4045eb5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rabbitmq/rabbitmq-server","events":[{"introduced":"1861a703c1234de44cfd704a9829d68f4b24e65c"},{"fixed":"c529a212390327e6d62620f25e9e1961ccc3c661"},{"fixed":"7f54319279d1ece161ae0b4cdc6f0e58a4045eb5"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"extracted_events":[{"introduced":"4.1.0"},{"fixed":"4.1.2"}],"cpe":"cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*"}}],"versions":["v4.1.1","v4.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44839.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}