CVE-2026-58028

Pretty-printed API output combined with centralauthtoken allows XSS with certain gadgets

State: Published
Severity: 0.0 None
Published: Jul 1, 2026
Updated: Jul 1, 2026
Reserved: Jun 27, 2026

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation CentralAuth.

This vulnerability is associated with program files includes/Api/ApiFormatBase.Php, includes/Api/ApiHelp.Php, includes/ResourceLoader/Module.Php, includes/Hooks/Handlers/PageDisplayHookHandler.Php, includes/LogFormatter/PermissionChangeLogFormatter.Php.

This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9; CentralAuth: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

Scores

CVSS	Score	Vector	Source
4.0	0.0 None	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N	wikimedia-foundation

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Affected Products

Product	Versions
MediaWikiWikimedia Foundation	before 1.46.0, 1.45.4, 1.44.6, 1.43.9Affected
CentralAuthWikimedia Foundation	before 1.46.0, 1.45.4, 1.44.6, 1.43.9Affected

References

https://phabricator.wikimedia.org/T422306

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