Improper Authentication in MediaWiki - CVE-2021-36128
Published: July 9, 2021
Vulnerability identifier: #VU54645
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-36128
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the Autoblocks for CentralAuth-issued suppression blocks are not properly implemented. A remote attacker can bypass authentication process and gain unauthorized access to the application.
Affected software
MediaWiki
How to mitigate CVE-2021-36128
Install updates from vendor's website.
MediaWiki - addressed in versions 1.31.15, 1.35.3, 1.36.1