CVE-2026-85724 Moquette - Broken Access Control

Moquette < 0.18.1 contains an authorization bypass caused by improper substitution of client ID and username in pattern-based ACL rules, letting attackers with crafted identities gain cross-tenant read/write access or cause DoS, exploit requires crafted client ID or username.

CVSS base score 9.6 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Required
EPSS
0.27% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Data Tampering, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-155

Vendor fix

Update to version 0.18.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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