Medium [CVE-2026-57213] Information Disclosure via Cross-Site Scripting in Federation Management
This medium-severity Red Hat Linux advisory covers CVE-2026-57213 affecting Red Hat Hardened Images.
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Summary
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. This cross-site scripting (XSS) vulnerability occurs because the `consumer_tag` field on the Federation Status page does not properly escape HTML.
When another user views the Federation Status page, the injected script executes in their browser, potentially leading to information disclosure or unauthorized actions. Red Hat severity: Moderate — CVSS 5.2 (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/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.
- < 3.13.14
- < 4.0.19
- < 4.1.10
- < 4.2.5
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
- 3.13.14
- 4.0.19
- 4.1.10
- 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: 3.13.14, 4.0.19, 4.1.10, 4.2.5, rabbitmq-server4-3-main-4.3.2-1.hum1, rabbitmq-server4-2-main-4.2.8-1.hum1. 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
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