{"id":"CVE-2026-85058","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-85058","summary":"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…","details":"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.","published":"2026-09-18T18:17:17.447","modified":"2026-09-18T18:17:17.447","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/moquette-io/moquette/commit/e23df019f6a11e22c7d2047d4f86d07095466c97","label":"moquette-io/moquette@e23df01"},"references":[{"type":"WEB","url":"https://github.com/moquette-io/moquette/commit/e23df019f6a11e22c7d2047d4f86d07095466c97"},{"type":"WEB","url":"https://github.com/moquette-io/moquette/commit/f5a323fe782d1505c0097498cb22eb6ec6c96973"},{"type":"WEB","url":"https://github.com/moquette-io/moquette/releases/tag/v0.18.1"},{"type":"WEB","url":"https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-18T18:17:17.447"}}