Advisory severityMedium5.4Vendor: HighRed Hat Linux

Medium [CVE-2026-57214] Cross-site Scripting in management UI allows arbitrary JavaScript execution

This medium-severity Red Hat Linux advisory covers CVE-2026-57214 affecting Red Hat Hardened Images.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-57214 Source published Jul 10, 2026Source updated Jul 10, 2026

VulniPulse record published Jul 29, 2026Record updated Jul 31, 2026

CVE-2026-57214

Affected products & platforms

Red Hat LinuxUnclassified

Open source advisory

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Summary

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. This vulnerability allows a user with permissions to declare a queue or exchange to inject and execute arbitrary JavaScript code in another user's browser, leading to a Cross-site Scripting (XSS) attack.

Red Hat severity: Important — CVSS 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N). Weakness: CWE-79.

Affected Red Hat products: Red Hat Hardened Images. Red Hat lists Red Hat OpenStack Platform 16.2; Red Hat OpenStack Platform 17.1; Red Hat OpenStack Platform 18.0 as not affected.

Red Hat fixing advisory: RHSA-2026:35939, RHSA-2026:35940.

Affected versions

< 4.2.5

Official advisory · high-confidence parse· fetched 12 days ago·verify at source

Fixed versions

4.2.5
rabbitmq-server4-3-main-4.3.2-1.hum1
rabbitmq-server4-2-main-4.2.8-1.hum1
RHSA-2026:35939
RHSA-2026:35940

Official advisory · high-confidence parse· fetched 12 days ago·verify at source

Mitigation

Upgrade to a fixed release: 4.2.5, rabbitmq-server4-3-main-4.3.2-1.hum1, rabbitmq-server4-2-main-4.2.8-1.hum1, RHSA-2026:35939, RHSA-2026:35940. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 12 days ago·verify at source

Discussion(0)

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