Information disclosure in MediaWiki - CVE-2021-31557
Published: April 26, 2021
Vulnerability identifier: #VU52554
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2021-31557
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MediaWiki.org
Affected software:
MediaWiki
MediaWiki
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the WikiLove extension. A remote attacker can gain unauthorized access to sensitive information on the system, such as existence of hidden users.
How to mitigate CVE-2021-31557
Install updates from vendor's website.