{"id":"CVE-2026-67236","revision":"35622c95cac94902874e7e998bd6ccff","records":[{"revision":"35622c95cac94902874e7e998bd6ccff","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-67236","aliases":[],"title":"RabbitMQ: Plaintext username:password stored in an insecure cookie after successful POST /login","description":"RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, a successful POST /login caused is_authorized/2 to set an auth cookie containing base64-encoded username:password credentials without HttpOnly, Secure, SameSite, or expiration protections. Because base64 is encoding rather than encryption, an attacker with same-origin cross-site scripting, an HTTP-readable network position, or local access to the browser cookie store could recover the actual login credentials; older browsers that treated an absent SameSite attribute as None also sent the cookie cross-site. This issue is fixed in versions 4.2.8 and 4.3.2.","state":0,"publishedAt":"2026-09-25T15:59:10.275+00:00","modifiedAt":"2026-09-28T13:41:39.055+00:00","affected":[{"ecosystem":"Vendor product","name":"rabbitmq-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"rabbitmq\",\n                    \"product\": \"rabbitmq-server\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 4.2.0, < 4.2.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 4.3.0, < 4.3.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-88vh-gx85-p36m","https://github.com/rabbitmq/rabbitmq-server/commit/df9e7f4c0afd311a672705f020d301efad355745","https://github.com/rabbitmq/rabbitmq-server/commit/edf1fbc7217aaf736955d2e13c9534901a2e0778","https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.8","https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-67236","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-67236","identifiers":["CVE-2026-67236"]},"retained":false,"historicalAffected":[]}],"coverage":[]}