CVE-2026-58032 — mw.Api.getErrorMessage() may return injected HTML if used without errorformat=html

CVE-2026-58032

mw.Api.getErrorMessage() may return injected HTML if used without errorformat=html PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Wikimedia Foundation / MediaWiki	affected * before 1.46.0, 1.45.4, 1.44.6, 1.43.9

CWE

CWE-79

References

https://phabricator.wikimedia.org/T426867

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.