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.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.7 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://phabricator.wikimedia.org/T428820	Permissions Required

Configurations

Configuration 1 (hide)

cpe:2.3:a:mediawiki:mediawiki:1.46.0:rc0:*:*:*:*:*:*

History

09 Jul 2026, 17:20

Type	Values Removed	Values Added
References	~~() https://phabricator.wikimedia.org/T428820 -~~	() https://phabricator.wikimedia.org/T428820 - Permissions Required
First Time		Mediawiki mediawiki Mediawiki
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 4.8
CPE		cpe:2.3:a:mediawiki:mediawiki:1.46.0:rc0::::::

01 Jul 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-01 15:17

Updated : 2026-07-09 17:20

NVD link : CVE-2026-58034

Mitre link : CVE-2026-58034

CVE.ORG link : CVE-2026-58034

JSON object : View

Products Affected

mediawiki

mediawiki

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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