Vulnerability Details CVE-2026-58034
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/blockConnectedTempAccountsField.Vue.
This issue affects CheckUser: from 1.46.0-rc.0 before 1.46.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.9%
CVSS Severity
CVSS v3 Score 4.8
Products affected by CVE-2026-58034
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cpe:2.3:a:mediawiki:mediawiki:1.46.0