Vulnerability Description
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, SessionEventLoop.run catches only InterruptedException, and SessionEventLoopGroup does not restart a terminated loop. An MQTT command that raises an uncaught exception can terminate an event loop shared by multiple client sessions, preventing every co-located client from processing PUBLISH, SUBSCRIBE, PUBACK, and other commands. An attacker can select client IDs that map across the available loops to disrupt session processing for the entire broker. This issue is fixed in version 0.18.1.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Moquette | Moquette | < 0.18.1 |
Related Weaknesses (CWE)
References
- https://github.com/moquette-io/moquette/commit/86feb7c31e6fac849c465d8079d08c0e7Patch
- https://github.com/moquette-io/moquette/pull/957Patch
- https://github.com/moquette-io/moquette/releases/tag/v0.18.1Release Notes
- https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhqExploitMitigationVendor Advisory
- https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhqExploitMitigationVendor Advisory
FAQ
What is CVE-2026-95842?
CVE-2026-95842 is a vulnerability with a CVSS score of 7.5 (HIGH). Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, SessionEventLoop.run catches only InterruptedException, and SessionEventLoopGroup does not restart a terminated loop. An MQTT command that ...
How severe is CVE-2026-95842?
CVE-2026-95842 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-95842?
Check the references section above for vendor advisories and patch information. Affected products include: Moquette Moquette.