Information disclosure in Discourse - CVE-2023-45131
Published: October 19, 2023 / Updated: December 17, 2025
Vulnerability identifier: #VU82242
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-45131
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application within new private chat messages. A remote attacker can gain unauthorized access to sensitive information on the system.
Affected software
Discourse
How to mitigate CVE-2023-45131
Install updates from vendor's website.
Discourse - addressed in versions 3.1.1, 3.2.0 beta2