CVE-2026-34094 Details
Description
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Page/Article.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
A vulnerability exists in Wikimedia Foundation MediaWiki versions prior to 1.43.7, 1.44.4, and 1.45.2, related to the handling of help links for page protection indicators. The issue arises because the link target is not properly validated, allowing for a misconfiguration that could lead to the insertion of JavaScript by an administrator, a privilege reserved for interface administrators only.
Users can update to MediaWiki versions 1.43.7, 1.44.4, or 1.45.2, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://phabricator.wikimedia.org/T416090 | wikimedia-foundation | Issue TrackingPatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-668 | Exposure of Resource to Wrong Sphere | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mediawiki mediawiki | < 1.43.7 >= 1.44.0, < 1.44.4 >= 1.45.0, < 1.45.2 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | wikimedia-foundation |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 18, 2026 | Initial Analysis | [email protected] |
| May 11, 2026 | CVE Modified | CISA-ADP |
| May 11, 2026 | New CVE Received | wikimedia-foundation |