Improper access control in Discourse - CVE-2025-32376
Published: April 29, 2025 / Updated: July 1, 2026
Vulnerability identifier: #VU136104
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-32376
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Civilized Discourse Construction Kit, Inc.
Affected software:
Discourse
Discourse
Detailed vulnerability description
The vulnerability allows a remote user to bypass direct message recipient limits.
The vulnerability exists due to improper access control in direct message creation when handling requests to create a direct message. A remote user can submit a request that bypasses the configured user limit to bypass direct message recipient limits.
How to mitigate CVE-2025-32376
Install security update from vendor's website.