CVE-2026-85724Critical· 9.6▾ AbyssalPoC availableMoquette 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 t…
▾ Abyssal zone — Critical with a public exploit or in-the-wild use
impact 52.8 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 25.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Exploit / PoC code exists
Last analysed / modified upstream
0.3%
0.3% → 0.3%
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.
moquette < 0.18.1Upgrade past the affected range:
moquette 0.18.1Affected packages:
io.moquette:moquette-broker <= 0.18.0Patched in:
io.moquette:moquette-broker 0.18.1Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-95848Critical· 9.1Moquette is a lightweight Java MQTT broker
CVE-2026-95846High· 7.5Moquette is a lightweight Java MQTT broker
CVE-2026-95847High· 7.5Moquette is a lightweight Java MQTT broker
CVE-2026-95842High· 7.5Moquette is a lightweight Java MQTT broker
CVE-2026-95843High· 7.5Moquette is a lightweight Java MQTT broker
CVE-2026-95844High· 7.5Moquette is a lightweight Java MQTT broker