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.
Metrics
Affected Vendors & Products
References
History
Thu, 24 Sep 2026 04:30:00 +0000
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| Metrics |
ssvc
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Mon, 21 Sep 2026 10:45:00 +0000
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| First Time appeared |
Moquette-io
Moquette-io moquette |
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| Vendors & Products |
Moquette-io
Moquette-io moquette |
Fri, 18 Sep 2026 21:30:00 +0000
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| Description | 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. | |
| Title | Moquette: Missing Authorization in io.moquette:moquette-broker | |
| Weaknesses | CWE-862 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-18T17:40:39.113Z
Updated: 2026-09-22T15:14:00.736Z
Reserved: 2026-09-02T21:21:01.774Z
Link: CVE-2026-85058
Updated: 2026-09-22T15:13:47.795Z
Status : Deferred
Published: 2026-09-18T18:17:17.447
Modified: 2026-09-24T21:25:27.050
Link: CVE-2026-85058
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