CVE-2026-85058
highMoquette is a lightweight Java MQTT broker.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/moquette-io/moquette/commit/e23df019f6a11e22c7d2047d4f86d07095466c97 security-advisories@github.com
- https://github.com/moquette-io/moquette/commit/f5a323fe782d1505c0097498cb22eb6ec6c96973 security-advisories@github.com
- https://github.com/moquette-io/moquette/releases/tag/v0.18.1 security-advisories@github.com
- https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx security-advisories@github.com
- https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx 134c704f-9b21-4f2e-91b3-4a467353bcc0