CVE-2026-58034

published 2026-07-01

CVE-2026-58034: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability…

Priority P4 18 medium 4.8 CVSS 3.1

AV N AC L PR H UI R S C C L I L A N

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
mediawiki	mediawiki	—	—
wikimedia_foundation	checkuser	>= 1.46.0-rc.0 < 1.46.0	1.46.0

CVSS provenance

nvd v3.1 4.8 MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

nvd v4.0 0.0 NONE CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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CWE-79