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)
EPSS: 0.004 (31.5th percentile) — read the EPSS interpretation.
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.
Affected products
- Broadcom Rabbitmq_server
- Rabbitmq Rabbitmq-server — versions >= 4.2.0, < 4.2.5
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, 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.