Cross-site scripting in RabbitMQ Server - #VU139288
Published: July 24, 2026
Vulnerability identifier: #VU139288
CSH Severity: Medium
CVSS v4 BT: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary script code in the operator's browser.
The vulnerability exists due to cross-site scripting in the stream-connection detail page template when rendering TLS peer-certificate distinguished name fields. A remote attacker can present a certificate with a crafted distinguished name to execute arbitrary script code in the operator's browser.
User interaction is required because an operator must open the stream-connection detail page, and exploitation requires a stream TLS listener configured with peer verification and a trusted certificate containing an attacker-controlled distinguished name.
Affected software
RabbitMQ Server
Remediation
Install security update from vendor's website.
RabbitMQ Server - addressed in versions 3.13.18, 4.0.23, 4.1.14, 4.2.9, 4.3.3