Cross-site Scripting (XSS) Affecting rabbitmq-server4.2 package, versions <0:4.2.8-1.hum1


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.22% (12th percentile)

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  • Snyk IDSNYK-RHEL10-RABBITMQSERVER42-18382273
  • published29 Jul 2026
  • disclosed10 Jul 2026

Introduced: 10 Jul 2026

CVE-2026-57214  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade RHEL:10 rabbitmq-server4.2 to version 0:4.2.8-1.hum1 or higher.
This issue was patched in RHSA-2026:35940.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rabbitmq-server4.2 package and not the rabbitmq-server4.2 package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1