CVE-2026-85058
Moquette 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.
Not on KEV
Not in CISA's Known Exploited Vulnerabilities catalogue as of the last daily pull. Absence is not proof of safety.
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FIRST has not scored this id yet.
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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No exposure census on this CVE's dispatches.
- nvd.nist.gov ↗
- first.org · EPSS ↗
- github.com/moquette-io/moquette/commit/e23df019f6a11e22c7d2047d4f86d07095466c97 ↗
- github.com/moquette-io/moquette/commit/f5a323fe782d1505c0097498cb22eb6ec6c96973 ↗
- github.com/moquette-io/moquette/releases/tag/v0.18.1 ↗
- github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx ↗
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