23 Oct 2026 15:48:27 UTC
Moquette publishes Last-Will messages without enforcing write authorization
cve-program · CVE-2026-95846 · Published
CVE-2026-95846
Moquette publishes Last-Will messages without enforcing write authorization
CVSS 4.0 8.7 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-95846
PublishedMoquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client's Last-Will message without applying the canWrite authorization and reserved-topic checks used for a normal PUBLISH. A client can configure a Will for a topic that the client is not permitted to write and cause the broker to publish the unauthorized message when the client disconnects unexpectedly. This issue allows unauthorized message injection into restricted topics. This issue is fixed in version 0.18.1.
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