XSS in Broadcom Rabbitmq Server
CVE-2026-57213
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.003 · change: -0.002
Affected products
- Broadcom Rabbitmq Server
- Rabbitmq Rabbitmq-Server — versions >= 4.2.0, < 4.2.5, >= 4.1.0, < 4.1.10, >= 4.0.0, < 4.0.19
Weakness classification (CWE)
References
- github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-qxrp-7cmp-p77h (Exploit, Vendor Advisory)
- github.com/rabbitmq/rabbitmq-server/pull/15708 (Patch, Issue Tracking)
- github.com/rabbitmq/rabbitmq-server/pull/15711 (Patch, Issue Tracking)
- github.com/rabbitmq/rabbitmq-server/commit/33dedfe4fd53ff009cc67ab36358d0624c6b… (Patch)
- github.com/rabbitmq/rabbitmq-server/commit/c2d0d69edf01efbd6e87dfb250c373a32da9… (Patch)
- github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5 (Release Notes)
Frequently asked questions
- What is CVE-2026-57213?
- CVE-2026-57213 is a medium-severity vulnerability in Broadcom Rabbitmq Server, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-07-10.
- How severe is CVE-2026-57213?
- Medium severity. CVSS v3 base score is 4.8 out of 10.