23 Oct 2026 15:48:27 UTC
Moquette: Missing Authorization in io.moquette:moquette-broker
cve-program · CVE-2026-85058 · Published
CVE-2026-85058
Moquette: Missing Authorization in io.moquette:moquette-broker
CVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-85058
PublishedMoquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client-controlled Last Will message through publish2Subscribers without invoking the authorizator.canWrite check used by normal PUBLISH paths. When anonymous access is enabled and topic ACLs restrict writes, a remote client can set an ACL-protected topic as the Last Will Topic during CONNECT and perform an abnormal client disconnect, causing the broker to inject attacker-controlled messages into a topic for which the client lacks write permission. This issue is fixed in version 0.18.1.
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