Input validation error in Discourse - CVE-2023-28440
Published: April 21, 2023
Vulnerability identifier: #VU75398
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-28440
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the admin theme import route. A remote administrator can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
Discourse
How to mitigate CVE-2023-28440
Install updates from vendor's website.
Discourse - addressed in versions 3.0.3, 3.1.0 beta4