Improper access control in Discourse - #VU140012
Published: July 29, 2026
Vulnerability identifier: #VU140012
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Affected software:
Discourse
Discourse
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in Discourse AI reviewables when handling reviewables associated with private messages. A remote privileged user can access a reviewable in the moderator review queue to disclose sensitive information.
User interaction is required, and exploitation requires a pre-existing Discourse AI reviewable associated with a private message.
Remediation
Install security update from vendor's website.