Input validation error in Discourse - CVE-2022-39226
Published: September 29, 2022 / Updated: July 1, 2026
Vulnerability identifier: #VU136071
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-39226
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper input validation in the user profile location and website fields when processing user-supplied profile data. A remote user can submit excessively large text values to cause a denial of service.
Other users are affected when loading the crafted profile.
Affected software
Discourse
How to mitigate CVE-2022-39226
Install security update from vendor's website.
Discourse - addressed in versions 2.8.9, 2.9.0 beta10