SB2026050695 - Security restrictions bypass in RabbitMQ

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026050695

SB2026050695 - Security restrictions bypass in RabbitMQ

Published: May 6, 2026

Security Bulletin ID SB2026050695
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Validation of Syntactic Correctness of Input (CVE-ID: N/A)

The vulnerability allows a remote user to bypass topic authorization and access restricted topics.

The vulnerability exists due to improper neutralization of special elements in the MQTT topic permission authorization logic when substituting user-supplied client_id values into regular expression patterns. A remote user can supply a crafted client_id containing regex metacharacters to bypass topic authorization and access restricted topics.

This issue affects deployments that use variable substitution such as {client_id} in MQTT topic authorization patterns.


Remediation

Install update from vendor's website.

References