Mediawiki: >> Checkuser >> 1.35 Security Vulnerabilities
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files modules/ext.CheckUser/checkuser/checkUserHelper/buildUserElement.Js.
This issue affects CheckUser: from * before 1.44.1.
CVSS Score
6.1
EPSS Score
0.0
Published
2026-02-03
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files modules/ext.CheckUser.TempAccounts/components/ShowIPButton.Vue, modules/ext.CheckUser.TempAccounts/SpecialBlock.Js.
This issue affects CheckUser: from * before 1.44.1.
CVSS Score
6.1
EPSS Score
0.0
Published
2026-02-03
An issue was discovered in the CheckUser extension through 1.35.0 for MediaWiki. Oversighted edit summaries are still visible in CheckUser results in violation of MediaWiki's permissions model.
CVSS Score
5.3
EPSS Score
0.002
Published
2020-03-19