CVE-2026-44839

RabbitMQ: Unsanitized vhost names allow for XSS in management UI

State: Published
Severity: 5.6 Medium
Published: May 27, 2026
Updated: May 27, 2026
Reserved: May 7, 2026

Description

RabbitMQ is a messaging and streaming broker. From 3.7.0 to before 4.1.2 and 4.0.13, This vulnerability is fixed in 4.1.2 and 4.0.13.

Scores

CVSS	Score	Vector	Source
4.0	5.6 Medium	CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Affected Products

Product	Versions
rabbitmq-serverrabbitmq	>= 3.7.0, < 4.0.13Affected >= 4.1.0-alpha, < 4.1.2Affected

References

https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-fh5r-jpm3-fjwp
https://github.com/rabbitmq/rabbitmq-server/commit/7f54319279d1ece161ae0b4cdc6f0e58a4045eb5

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.