{"answers":{"affected":"1 open source package ship an affected version, including rabbitmq. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67411 exists.","fix":"Upgrade rabbitmq to a fixed version for your release line: 3.13.18, 4.0.23, 4.1.14 or 4.2.9.","what":"CVE-2026-67411 is a medium-severity authentication bypass vulnerability in Broadcom Rabbitmq Server, published on 25 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-67411 and fix it if it is affected.\n\nWhat it is: CVE-2026-67411 is a medium-severity authentication bypass vulnerability in Broadcom Rabbitmq Server, published on 25 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67411 exists.\n\nAffected packages and fixed versions:\n- rabbitmq (Bitnami): affected from 3.13.0; fixed in 3.13.18, 4.0.23, 4.1.14, 4.2.9, 4.3.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-67411/ (Markdown: https://insights.sbomify.com/CVE-2026-67411/index.md)","id":"CVE-2026-67411","markdown":"https://insights.sbomify.com/CVE-2026-67411/index.md","name":"CVE-2026-67411","record":{"aliases":["AZL-105296","BIT-rabbitmq-2026-67411","DEBIAN-CVE-2026-67411","GHSA-4r6f-9cpw-f6g6","UBUNTU-CVE-2026-67411"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"RabbitMQ message broker","requires_auth":"low_privilege","summary":"Attackers with valid credentials can bypass loopback-only user restrictions in RabbitMQ when using MQTT with PROXY Protocol, allowing unauthorized access from non-loopback addresses.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"rabbitmq_server","vendor":"broadcom"}],"cvss":{"score":6,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopback_users, causing the frontend-to-broker address to be treated as loopback. An attacker who can reach the trusted frontend and has valid credentials for a loopback-restricted account can therefore bypass the source-address restriction; the issue does not bypass password authentication. This issue is fixed in versions 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3.","ecosystems":["Bitnami"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"RabbitMQ: Web MQTT with PROXY Protocol enabled: a loopback-only user permission bypass","id":"CVE-2026-67411","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"broadcom:rabbitmq_server","products":["broadcom:rabbitmq_server"],"type":"auth_bypass","year":"2026"},"n_packages":1,"n_references":5,"next":{"headline":"RabbitMQ: Federation upstream skips vhost authorization allowing cross-vhost message access","id":"CVE-2026-67412"},"packages":[{"ecosystem":"Bitnami","fixed":["3.13.18","4.0.23","4.1.14","4.2.9","4.3.3"],"introduced":["3.13.0","4.0.0","4.1.0","4.2.0","4.3.0"],"last_affected":[],"package":"rabbitmq","purl":"pkg:bitnami/rabbitmq","source":"BIT-rabbitmq-2026-67411"}],"prev":{"headline":"RabbitMQ: OAuth2 Client Secret Exposed via Unauthenticated JavaScript Endpoint","id":"CVE-2026-67410"},"products":["rabbitmq-server"],"published":"2026-09-25","related":[{"cvss_score":9.8,"headline":"Auth bypass in Pivotal RabbitMQ 3.x before 3.5.8 and 3.6.x before 3.6.6; RabbitMQ for PCF 1.5.x before 1.5.20, 1.6.x before 1.6.12 and 1.7.x before 1.7.7","id":"CVE-2016-9877","kev_date_added":null,"published":"2016-12-29"},{"cvss_score":9.2,"headline":"RabbitMQ: OAuth2 silent verify_none fallback for JWKS fetch","id":"CVE-2026-67404","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":9.1,"headline":"RabbitMQ: Trust-store whitelist by Issuer+Serial only","id":"CVE-2026-67231","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":8.7,"headline":"Information disclosure in rabbitmq-server","id":"CVE-2026-57219","kev_date_added":null,"published":"2026-07-10"},{"cvss_score":8.2,"headline":"RabbitMQ: Plaintext username:password stored in an insecure cookie after successful POST /login","id":"CVE-2026-67236","kev_date_added":null,"published":"2026-09-25"},{"cvss_score":8.2,"headline":"RabbitMQ: JWKS Fetch Ignores HTTP Response Status Code - Signing Key Destruction Causes Authentication DoS","id":"CVE-2026-67409","kev_date_added":null,"published":"2026-09-25"},{"cvss_score":8.2,"headline":"RabbitMQ: OAuth2 Client Secret Exposed via Unauthenticated JavaScript Endpoint","id":"CVE-2026-67410","kev_date_added":null,"published":"2026-09-25"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-25","vendors":["rabbitmq"]},"summary":"Attackers with valid credentials can bypass loopback-only user restrictions in RabbitMQ when using MQTT with PROXY Protocol, allowing unauthorized access from non-loopback addresses.","url":"https://insights.sbomify.com/CVE-2026-67411/"}