Missing Authorization in RabbitMQ Server - CVE-2026-66069
Published: July 9, 2026 / Updated: September 28, 2026
Vulnerability identifier: #VU137234
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-66069
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to modify the integrity of authentication-attempt metrics.
The vulnerability exists due to missing authorization in the auth-attempt metrics DELETE endpoint when handling DELETE requests to /api/auth/attempts/:node. A remote user can send a DELETE request to reset per-node authentication-attempt counters to modify the integrity of authentication-attempt metrics.
The issue affects counters only and does not erase logs. Exploitation requires the management plugin to be enabled.
Affected software
RabbitMQ Server
How to mitigate CVE-2026-66069
Install security update from vendor's website.
RabbitMQ Server - addressed in versions 4.2.0 beta.1, 4.2.7