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VULNERABILITIES

CVE-2026-85724 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9.6 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq CISA-ADPExploitMitigationVendor Advisory
https://github.com/moquette-io/moquette/commit/b4a98bb3f3425ece476ed073aa080c627c1239af [email protected]Patch
https://github.com/moquette-io/moquette/releases/tag/v0.18.1 [email protected]Release Notes
https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq [email protected]ExploitMitigationVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-155Improper Neutralization of Wildcards or Matching Symbols[email protected]
CWE-863Incorrect Authorization[email protected]

Affected Products

ProductVersions
moquette moquette
< 0.18.1

CPE

  • cpe:2.3:a:moquette:moquette:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-85724
NVD Published Date:
Sep 23, 2026
NVD Last Modified:
Sep 25, 2026
Source:
[email protected]
CVE-2026-85724 Details - Not Deferred