CVEvulnerability

CVE-2026-85724

9.6 CRITICAL Published 2026-09-23 Modified 2026-09-25 Official page ↗
Status
Analyzed
Published
2026-09-23
Last modified
2026-09-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.6 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Weaknesses
CWE-155, CWE-863

Description

Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when pattern-based ACL rules are configured, AuthorizationsCollector.canDoOperation substitutes client ID and username values directly into rules containing %c or %u and then treats the result as an MQTT topic filter. A client that uses + or # in either identity can broaden the substituted filter and gain cross-tenant read and write access. A # identity can also produce an invalid filter that triggers a NullPointerException in Topic.match and disrupts session processing. This issue is fixed in version 0.18.1.

Affected configurations

• moquette moquette (< 0.18.1)

Related

Weakness · CWE (2)

  • CWE-155 Improper Neutralization of Wildcards or Matching Symbols weakness
  • CWE-863 Incorrect Authorization weakness

References