What’s Vulnerable › Vulnerabilities

CVE-2026-57213: RabbitMQ: Stored XSS federation management plugin via unsanitized consumer_tag rendering

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-10 · updated 2026-10-25
• Weakness: CWE-79

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.

Affected products

• rabbitmq-server: from 3.13.0 before 4.2.5 — fixed in 4.2.5

How to fix

Upgrade to a fixed version: rabbitmq-server 4.2.5. Check the vendor advisory for mitigations.

References

• https://github.com/rabbitmq/rabbitmq-server/commit/33dedfe4fd53ff009cc67ab36358d0624c6b2e53
• https://github.com/rabbitmq/rabbitmq-server/commit/c2d0d69edf01efbd6e87dfb250c373a32da957f8
• https://github.com/rabbitmq/rabbitmq-server/pull/15708
• https://github.com/rabbitmq/rabbitmq-server/pull/15711
• https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5
• https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-qxrp-7cmp-p77h
• https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-qxrp-7cmp-p77h

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