Medium severity · published Jul 10, 2026
CVE-2026-57214
RabbitMQ: Stored XSS in RabbitMQ management UI
5.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
rabbitmq-server · rabbitmq
>= 4.2.0, < 4.2.5 · source: vendor
RS
Rabbitmq Server · Broadcom
4.2.0 before 4.2.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57214
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57214
Patch
https://github.com/rabbitmq/rabbitmq-server/commit/b0027b6c1ae5b869d876e211efe6189ffd92b5c2
Patch
https://github.com/rabbitmq/rabbitmq-server/commit/b267a290dd89e42c6e0256f46fc273a8adb7f3ec
Issue Tracking
https://github.com/rabbitmq/rabbitmq-server/pull/15606
Issue Tracking
https://github.com/rabbitmq/rabbitmq-server/pull/15608
Release Notes
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5
Vendor Advisory
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-6jfq-prw2-7rwp
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