CVE-2026-57213 RabbitMQ: Stored XSS federation management plugin via unsanitized consumer_tag rendering
An attacker with federation configuration privileges can inject JavaScript into the management UI, potentially hijacking sessions of administrators viewing the page.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-57213?
CVE-2026-57213 is a medium-severity cross-site scripting vulnerability in Broadcom Rabbitmq Server, published on 10 Jul 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
RabbitMQ is a messaging and streaming broker. Prior to 3.13.14, 4.0.19, 4.1.10, and 4.2.5, the rabbitmq_federation_management plugin renders the consumer_tag field on the Federation Status page without HTML escaping, allowing a user who can configure a federation upstream or policy to execute JavaScript in the browser of a user viewing that page. This issue is fixed in versions 3.13.14, 4.0.19, 4.1.10, and 4.2.5.
Weakness: CWE-79
Which versions are affected by CVE-2026-57213?
It affects 1 product.
Products include Broadcom Rabbitmq Server.
How do I fix CVE-2026-57213?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-57213 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57213 exists.
Other vulnerabilities in Broadcom Rabbitmq Server
- CVE-2016-9877 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
- CVE-2026-67404 RabbitMQ: OAuth2 silent verify_none fallback for JWKS fetch
- CVE-2026-67231 RabbitMQ: Trust-store whitelist by Issuer+Serial only
- CVE-2026-57219 Information disclosure in rabbitmq-server
- CVE-2026-67236 RabbitMQ: Plaintext username:password stored in an insecure cookie after successful POST /login
Sources
Also known as AZL-92343, DEBIAN-CVE-2026-57213, GHSA-qxrp-7cmp-p77h, UBUNTU-CVE-2026-57213.