XSS in Broadcom Rabbitmq Server
CVE-2026-57214
RabbitMQ is a messaging and streaming broker. Prior to 4.2.5, the RabbitMQ management UI renders the x-internal-purpose queue or exchange argument into an HTML title attribute without proper escaping on the Queues and Exchanges pages, allowing a user with permission to declare a queue or exchange to execute JavaScript in another user's browser. This issue is fixed in version 4.2.5.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (11.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.4% 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: 0.002 · change: -0.002
Affected products
- Broadcom Rabbitmq Server
- Rabbitmq Rabbitmq-Server — versions >= 4.2.0, < 4.2.5
Weakness classification (CWE)
References
- github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-6jfq-prw2-7rwp (Vendor Advisory)
- github.com/rabbitmq/rabbitmq-server/pull/15606 (Patch, Issue Tracking)
- github.com/rabbitmq/rabbitmq-server/pull/15608 (Patch, Issue Tracking)
- github.com/rabbitmq/rabbitmq-server/commit/b0027b6c1ae5b869d876e211efe6189ffd92… (Patch)
- github.com/rabbitmq/rabbitmq-server/commit/b267a290dd89e42c6e0256f46fc273a8adb7… (Patch)
- github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5 (Release Notes)
Frequently asked questions
- What is CVE-2026-57214?
- CVE-2026-57214 is a medium-severity vulnerability in Broadcom Rabbitmq Server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-10.
- How severe is CVE-2026-57214?
- Medium severity. CVSS v3 base score is 5.4 out of 10.