CVE-2026-95844highCWE-674

CVE-2026-95844: high-severity vulnerability in moquette-io moquette

Moquette deeply nested MQTT topics can cause stack exhaustion

Published · Updated

Follow this CVE+ Monitor moquette+ Monitor io.moquette:moquette-broker

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.4%
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.
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
Affected products
moquette-io · moquette
Related CVEs — moquette-io moquette

In the same product, most dangerous first.

CVE-2026-85058HIGHMoquette: Missing Authorization in io.moquette:moquette-brokerEPSS 0.5%CVE-2026-95842HIGHMoquette uncaught MQTT command exceptions can terminate shared session event loopsEPSS 0.4%CVE-2026-95843HIGHMoquette malformed shared subscriptions can crash command processingEPSS 0.4%CVE-2026-95848CRITICALMoquette fails open when configured authentication or authorization classes cannot loadEPSS 0.4%CVE-2026-95845HIGHMoquette unbounded per-session message queues allow memory exhaustionEPSS 0.4%CVE-2026-95847HIGHMoquette client IDs can cause cross-session H2 durable-queue corruptionEPSS 0.3%