Improper access control in Discourse - CVE-2022-39378
Published: November 1, 2022 / Updated: July 1, 2026
Vulnerability identifier: #VU136069
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-39378
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 attacker to disclose sensitive information.
The vulnerability exists due to improper access control in user badge display when showing badges associated with restricted topics. A remote attacker can view a badge linked to a restricted topic to disclose sensitive information.
Only the topic title associated with the badge is exposed, and this occurs when a badge was awarded based on activity in a topic with restricted access.
How to mitigate CVE-2022-39378
Install security update from vendor's website.