{"id":"CVE-2026-85058","summary":"Moquette: Missing Authorization in io.moquette:moquette-broker","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.","aliases":["GHSA-9jjc-fw8x-fmwx"],"modified":"2026-09-23T03:47:29.220389231Z","published":"2026-09-18T17:40:39.113Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85058.json"},"references":[{"type":"WEB","url":"https://github.com/moquette-io/moquette/releases/tag/v0.18.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85058.json"},{"type":"ADVISORY","url":"https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85058"},{"type":"FIX","url":"https://github.com/moquette-io/moquette/commit/e23df019f6a11e22c7d2047d4f86d07095466c97"},{"type":"FIX","url":"https://github.com/moquette-io/moquette/commit/f5a323fe782d1505c0097498cb22eb6ec6c96973"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/moquette-io/moquette","events":[{"introduced":"0"},{"fixed":"e8ce83336acce69d8e9c11c98805217aa156a16b"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"0.18.1"}]}}],"versions":["v0.18.0","0.18.0","last_gradle","v0.12.1","v0.12","v0.11","second_try_with_osgi_giveup","last_with_maven","v0.10","before_sofia2","v0.9","v0.8","last_with_ringbuffer","0.7","last_osgi"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85058.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}