Information disclosure in RabbitMQ Server - #VU139295
Published: July 24, 2026
Vulnerability identifier: #VU139295
CSH Severity: Medium
CVSS v4 BT: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: N/A
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to exposure of sensitive information in the unauthenticated /js/oidc-oauth/bootstrap.js endpoint when serving JavaScript bootstrap content for the management UI. A remote attacker can send a crafted request to retrieve the OAuth2 client secret and disclose sensitive information.
Only deployments with the management UI enabled, OAuth2 authentication enabled, and a configured oauth_client_secret are vulnerable.
Affected software
RabbitMQ Server
Remediation
Install security update from vendor's website.
RabbitMQ Server - addressed in versions 4.2.9, 4.3.3