CVE-2021-46150 Information

Description

An issue was discovered in MediaWiki before 1.35.5 1.36.x before 1.36.3 and 1.37.x before 1.37.1. Special:CheckUserLog allows CheckUser XSS because of date mishandling as demonstrated by an XSS payload in MediaWiki:October.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Reference

https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/CheckUser/+/79c2c49a18f96b159258958feca90fce964c350a https://phabricator.wikimedia.org/T292795

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

4.8