CVE-2026-95844 — Moquette deeply nested MQTT topics can cause stack exhaustion
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 in…
Published: 2026-09-23 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7