CVE-2026-58028

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

MEDIUM

5.4

CVSS Score

Published: July 1, 2026 at 03:15 PM UTC

Updated: July 9, 2026 at 07:51 PM UTC

3 products affected across 2 vendorsMediaWikiMediaWikiCentralAuth

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Severity

MEDIUM5.4

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

MediaWiki · Mediawiki

95%

1.43.0 ≤ v < 1.43.91.44.0 ≤ v < 1.44.61.45.0 ≤ v < 1.45.41.46.0 rc0

Affected range stops below 1.43.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.44.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.45.4, so it looks safe — our inference, not a vendor statement

CentralAuth · Wikimedia

60%

v < 1.46.0, 1.45.4, 1.44.6, 1.43.9

Affected range stops below 1.46.0, 1.45.4, 1.44.6, 1.43.9, so it looks safe — our inference, not a vendor statement

MediaWiki · Wikimedia

60%

v < 1.46.0, 1.45.4, 1.44.6, 1.43.9

Affected range stops below 1.46.0, 1.45.4, 1.44.6, 1.43.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Permissions Required

Source: cverecord

https://phabricator.wikimedia.org/T422306

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-79

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