Origin validation error in Discourse - CVE-2025-23023
Published: February 5, 2025
Vulnerability identifier: #VU103651
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-23023
CWE-ID: CWE-346
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 compromise the target system.
The vulnerability exists due to the cache poisoning issue within request headers. A remote attacker can use a specially crafted request with the right request headers to poison the anonymous cache.
How to mitigate CVE-2025-23023
Install updates from vendor's website.