rabbitmq-server-4.0.9-7.fc43
- rabbitmq-server-4.0.9-7.fc43
Security update: backport upstream RabbitMQ security fixes to 4.0.9.
Management UI and HTTP API: - CVE-2026-67421: HTML injection on the OAuth 2 login page via an attacker-controlled queue name; the error reason is now escaped and the default CSP gains base-uri 'none'. - CVE-2026-67239: stored XSS via TLS peer certificate fields in the stream connection page. - CVE-2026-66073, CVE-2026-67226, CVE-2026-67227: atom table exhaustion via the "node" field, the user tags list and global parameter names. - CVE-2026-61837: the AMQP 1.0 management GET /bindings endpoint now checks permissions like the other binding operations.
Authentication and authorisation: - CVE-2026-67223: LDAP user DN templates now RFC 4514-escape the username. - CVE-2026-44838, CVE-2026-67407: regex metacharacters (including "-") in topic permission variables are now escaped. - CVE-2026-67411: MQTT and Web MQTT behind a PROXY protocol frontend now check loopback_users against the real client address. - CVE-2026-67412: Federation upstream URIs now require access to the target virtual host. - CVE-2026-66071: OAuth 2 tag scopes no longer create new atoms. - CVE-2026-67222: AMQP URI auth_mechanism values are limited to known mechanisms and no longer create atoms.
Denial of service: - CVE-2026-67413: JMS topic exchange LIKE selectors run with regex match limits. - CVE-2026-67230: Web STOMP enforces the login timeout and a frame size limit before authentication. - CVE-2026-67225: the stream protocol rejects frames larger than the negotiated frame_max.
This update also includes the fixes from 4.0.9-6 (CVE-2026-67409, CVE-2026-67416, CVE-2026-67418, CVE-2026-67420).
Security update: backport upstream RabbitMQ security fixes to 4.0.9.
- CVE-2026-67409: JWKS signing keys are now only replaced from a successful (HTTP 200), well-formed response, so an error reply from the OAuth 2 provider can no longer wipe the cached keys and deny all OAuth 2 logins.
- CVE-2026-67416: AMQP 1.0 body section descriptors are now matched by exact symbol length, so crafted descriptors can no longer crash consumers.
- CVE-2026-67418: MQTT 5 properties that are not valid for the packet type are now rejected, so a publisher can no longer disconnect matching subscribers.
- CVE-2026-67420: user tags are rebuilt on OAuth 2 credential refresh, so a revoked impersonator tag no longer survives on an existing connection.