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.
Metrics
Affected Vendors & Products
References
History
Fri, 25 Sep 2026 13:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Moquette
Moquette moquette |
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| CPEs | cpe:2.3:a:moquette:moquette:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Moquette
Moquette moquette |
Thu, 24 Sep 2026 16:30:00 +0000
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| Metrics |
ssvc
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Wed, 23 Sep 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Moquette-io
Moquette-io moquette |
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| Vendors & Products |
Moquette-io
Moquette-io moquette |
Wed, 23 Sep 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Moquette pattern ACL wildcard injection allows cross-tenant authorization bypass | |
| Weaknesses | CWE-155 CWE-863 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-23T16:29:36.296Z
Updated: 2026-09-24T14:19:04.429Z
Reserved: 2026-09-04T14:45:10.648Z
Link: CVE-2026-85724
Updated: 2026-09-24T14:18:33.378Z
Status : Analyzed
Published: 2026-09-23T17:17:17.623
Modified: 2026-09-25T13:34:57.140
Link: CVE-2026-85724
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