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

CVE-2026-58034

Stored XSS through a system message when blocking a temporary account that's related to other temporary accounts PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Wikimedia Foundation / CheckUser	affected 1.46.0-rc.0 before 1.46.0

CWE

CWE-79

References

https://phabricator.wikimedia.org/T428820

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.