CVE-2026-58034 NONE

CVE-2026-58034: Stored XSS through a system message when blocking a temporary account that's related to other temporary accounts

Vendor Wikimedia Foundation
Product CheckUser
Weakness CWE-79 · XSS
Published July 1, 2026
Last update July 1, 2026
View on NVD All CVEs

CVSS base score

0.0/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction —
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 1, 2026 CVE published
July 1, 2026 Record updated