What’s Vulnerable › Vulnerabilities

CVE-2026-57214: RabbitMQ: Stored XSS in RabbitMQ management UI

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-10-25
• Weakness: CWE-79

Description

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.

Affected products

• rabbitmq-server: from 4.2.0 before 4.2.5 — fixed in 4.2.5

How to fix

Upgrade to a fixed version: rabbitmq-server 4.2.5. Check the vendor advisory for mitigations.

References

• https://github.com/rabbitmq/rabbitmq-server/commit/b0027b6c1ae5b869d876e211efe6189ffd92b5c2
• https://github.com/rabbitmq/rabbitmq-server/commit/b267a290dd89e42c6e0256f46fc273a8adb7f3ec
• https://github.com/rabbitmq/rabbitmq-server/pull/15606
• https://github.com/rabbitmq/rabbitmq-server/pull/15608
• https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5
• https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-6jfq-prw2-7rwp
• https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-6jfq-prw2-7rwp

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