CVE-2026-58032
mw.Api.getErrorMessage() may return injected HTML if used without errorformat=html
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 resources/src/mediawiki.Api/index.Js. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
INFO
Published Date :
July 1, 2026, 2:56 p.m.
Last Modified :
July 1, 2026, 2:56 p.m.
Remotely Exploit :
Yes !
Source :
wikimedia-foundation
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | c4f26cc8-17ff-4c99-b5e2-38fc1793eacc | ||||
| CVSS 4.0 | MEDIUM | c4f26cc8-17ff-4c99-b5e2-38fc1793eacc |
Solution
- Update MediaWiki to version 1.46.0 or later.
- Apply patch for version 1.45.4.
- Apply patch for version 1.44.6.
- Apply patch for version 1.43.9.
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CVE-2026-58032 vulnerability anywhere in the article.