CVE-2026-58037
Core log entries for exceptions and XSS issues in log entry formatting code that may be caused by user-controlled input
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Language/Language.Php, includes/Logging/BlockLogFormatter.Php, includes/Logging/LogFormatter.Php, includes/Logging/PatrolLogFormatter.Php, includes/Logging/RenameuserLogFormatter.Php, includes/Logging/TagLogFormatter.Php, includes/Specials/SpecialVersion.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
INFO
Published Date :
July 1, 2026, 2:51 p.m.
Last Modified :
July 1, 2026, 2:51 p.m.
Remotely Exploit :
Yes !
Source :
wikimedia-foundation
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | NONE | c4f26cc8-17ff-4c99-b5e2-38fc1793eacc | ||||
| CVSS 4.0 | NONE | c4f26cc8-17ff-4c99-b5e2-38fc1793eacc |
Solution
- Update MediaWiki to version 1.46.0 or later.
- Apply security patches for affected versions.
- Review and sanitize all user-generated input.
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