Improper access control in Discourse - CVE-2023-23622
Published: March 17, 2023 / Updated: July 1, 2026
Vulnerability identifier: #VU136502
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-23622
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 tag topic count handling when viewing tags. A remote attacker can poll a visible tag to determine whether new topics were created in read restricted categories to disclose sensitive information.
User interaction is required to view the tag information.
How to mitigate CVE-2023-23622
Install security update from vendor's website.