CVE-2026-85058: moquette · Missing Authorization
Affects moquetteSource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 0.18.1 soon.
Data as of 2 Nov 2026, 22:58 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.18.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Upgrade moquette and io.moquette/moquette to 0.18.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| moquette-iomoquette | Affected
| Fixed in
|
Mavenio.moquette/moquettepkg:maven/io.moquette/moquetteOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade moquette to version 0.18.1 or later, where this missing authorization vulnerability is fixed. No other mitigation is required as the fix addresses the root cause.
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.
References
- github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx (opens in a new tab)
- github.com/moquette-io/moquette/commit/e23df019f6a11e22c7d2047d4f86d07095466c97 (opens in a new tab)
- github.com/moquette-io/moquette/commit/f5a323fe782d1505c0097498cb22eb6ec6c96973 (opens in a new tab)
- github.com/moquette-io/moquette/releases/tag/v0.18.1 (opens in a new tab)