CVE-2026-85724
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.
Not on KEV
Not in CISA's Known Exploited Vulnerabilities catalogue as of the last daily pull. Absence is not proof of safety.
0%
Chance of exploitation in the next 30 days, 16th percentile of all CVEs. A forecast; KEV outranks it.
9.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
—
No exposure census on this CVE's dispatches.
- nvd.nist.gov ↗
- first.org · EPSS ↗
- github.com/moquette-io/moquette/commit/b4a98bb3f3425ece476ed073aa080c627c1239af ↗
- github.com/moquette-io/moquette/releases/tag/v0.18.1 ↗
- github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq ↗
- github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq ↗
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