Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-85724

CVE-2026-85724CRITICAL

moquette-io moquette — Moquette pattern ACL wildcard injection allows cross-tenant authorization bypass

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  C  H  H  N    9.6   .0027   17.4     —

AFFECTED
  Product   Versions    Fixed
  moquette  < 0.18.1 –  —

TIMELINE
  Sep 4   Reserved by GitHub_M
  Sep 23  Published (CNA: GitHub_M)
  Sep 25  EXPLOIT PUBLISHED — CVE-2026-85724 (moquette-io moquette). Public exploit reference added.

CWE-155, CWE-863 · CNA: GitHub_M · CVSS v3.1 · 3 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 4, 2026	Reserved	Reserved by GitHub_M
September 23, 2026	Published	Published (CNA: GitHub_M)
September 25, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-85724 (moquette-io moquette). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
moquette-io	moquette	—	< 0.18.1	—

Weaknesses

CWE-155 · CWE-863

References (3)

https://github.com/moquette-io/moquette/commit/b4a98bb3f3425ece476ed073aa080c627c1239af [Patch]
https://github.com/moquette-io/moquette/releases/tag/v0.18.1 [Release Notes]
https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-85724 at cve.org

Vendors: moquette-io

Weaknesses: CWE-155 · CWE-863

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-85724 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.