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-2026-95847

CVE-2026-95847HIGH

moquette-io moquette — Moquette client IDs can cause cross-session H2 durable-queue corruption

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   N   H   L    8.8   .0034   25.3     —

AFFECTED
  Product   Versions    Fixed
  moquette  < 0.18.1 –  —

TIMELINE
  Sep 22  Reserved by GitHub_M
  Sep 23  Published (CNA: GitHub_M)
  Sep 28  EXPLOIT PUBLISHED — CVE-2026-95847 (moquette-io moquette). Public exploit reference added.

CWE-99 · CNA: GitHub_M · CVSS v4.0 · 4 references · NVD status: Analyzed

Description

Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, H2PersistentQueue derives a session's message-map name as queue_ plus the client ID and its metadata-map name as queue_ plus the client ID plus _meta. A durable session whose client ID ends in _meta can therefore make its message map collide with another client's metadata map. The colliding sessions read and write the same H2 MVStore map with incompatible value types, which can corrupt queue head and tail data and cause message loss, misdelivery, failed queue reloads, or exposure of queued content across sessions. This issue is fixed in version 0.18.1.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 22, 2026	Reserved	Reserved by GitHub_M
September 23, 2026	Published	Published (CNA: GitHub_M)
September 28, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-95847 (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-99

References (4)

https://github.com/moquette-io/moquette/commit/72d6c8257191d2e4b2e3aa11ab25fd09f88c6cb7 [Patch]
https://github.com/moquette-io/moquette/pull/964 [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-2026-95847 at cve.org

Vendors: moquette-io

Weaknesses: CWE-99

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-95847 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.