Moquette: Missing Authorization in io.moquette:moquette-broker (moquette-io moquette)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.45 % · percentile 39 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Deferred
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.
Weaknesses (CWE)
- CWE-862 — Missing Authorization
References
- https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx
- https://github.com/moquette-io/moquette/commit/e23df019f6a11e22c7d2047d4f86d07095466c97
- https://github.com/moquette-io/moquette/commit/f5a323fe782d1505c0097498cb22eb6ec6c96973
- https://github.com/moquette-io/moquette/releases/tag/v0.18.1
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | GitHub_M |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-9jjc-fw8x-fmwx — io.moquette:moquette-broker has a Missing Authorization issue
European references
- ENISA EUVD · EUVD-2026-83269
- GCVE · GCVE-0-2026-85058
Affected products
| Product | Versions |
|---|---|
| moquette-io · moquette | affected < 0.18.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |