CVE-2026-95843
Moquette malformed shared subscriptions can crash command processing
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.subscribe parses a shared-subscription filter through SharedSubscriptionUtils.extractShareName before validating the complete $share/{shareName}/{topicFilter} structure. A remote client can send a filter such as $share/grp without a topic-filter portion, causing a StringIndexOutOfBoundsException while calculating the share name. The exception terminates command handling on the shared session event loop and can deny service to other client sessions assigned to that loop. This issue is fixed in version 0.18.1.
| CWE | CWE-20 |
| Vendor | moquette-io |
| Product | moquette |
| Published | Sep 23, 2026 |
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Affected Versions
moquette-io / moquette
< 0.18.1
References
github.com: https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq github.com: https://github.com/moquette-io/moquette/pull/962 github.com: https://github.com/moquette-io/moquette/commit/affdc71fdba92dc020421678970ae70518fb6da2 github.com: https://github.com/moquette-io/moquette/releases/tag/v0.18.1