Moquette pattern ACL wildcard injection allows cross-tenant authorization bypass (moquette-io moquette)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.32 % · percentile 25 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
Description
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when pattern-based ACL rules are configured, AuthorizationsCollector.canDoOperation substitutes client ID and username values directly into rules containing %c or %u and then treats the result as an MQTT topic filter. A client that uses + or # in either identity can broaden the substituted filter and gain cross-tenant read and write access. A # identity can also produce an invalid filter that triggers a NullPointerException in Topic.match and disrupts session processing. This issue is fixed in version 0.18.1.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N | GitHub_M |
| CVSS 3.1 | CRITICAL 9.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-5f42-97gr-vfhq — Moquette: Pattern-ACL wildcard injection (cross-tenant authorization bypass) plus a remote-unauthenticated DoS cluster, a Will-message authorization bypass, and a cross-session durable-corruption bug
European references
- ENISA EUVD · EUVD-2026-85411
- GCVE · GCVE-0-2026-85724
Affected configurations (NVD CPE)
cpe:2.3:a:moquette:moquette:*:*:*:*:*:*:*:*< 0.18.1
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 |