CVE-2026-95844

Moquette deeply nested MQTT topics can cause stack exhaustion

Published Sep 23, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, Moquette does not limit the depth of topic names and topic filters before processing them through recursive CTrie insertion and matching operations. A remote client can publish or subscribe with a deeply nested topic, causing a StackOverflowError that disrupts session processing and can deny service to broker clients. This issue is fixed in version 0.18.1.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Moquette
Moquette moquette
CPEs cpe:2.3:a:moquette:moquette:*:*:*:*:*:*:*:*
Vendors & Products Moquette
Moquette moquette
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
First Time appeared Moquette-io
Moquette-io moquette
Vendors & Products Moquette-io
Moquette-io moquette
Type Values Removed Values Added
Description Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, Moquette does not limit the depth of topic names and topic filters before processing them through recursive CTrie insertion and matching operations. A remote client can publish or subscribe with a deeply nested topic, causing a StackOverflowError that disrupts session processing and can deny service to broker clients. This issue is fixed in version 0.18.1.
Title Moquette deeply nested MQTT topics can cause stack exhaustion
Weaknesses CWE-674
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 29, 2026, 2:02 AM
Reserved
Sep 22, 2026, 4:39 PM
Status
Modified
Published
Sep 23, 2026, 5:17 PM
Modified
Sep 29, 2026, 2:16 AM