CVE-2026-58025

Critical

Description

Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/WikiImporter.Php, includes/Import/WikiRevision.Php, includes/Logging/LogEntryBase.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

SeverityCritical

CVSS9.8

Exploit probability—

Product

Mediawiki

PublishedJul 1, 2026

First seenJul 1, 2026

Weakness typeCWE-502Deserialization of untrusted data CWE-94Code injection

How to fix

Update

mediawiki mediawiki1.43.9, 1.44.6, 1.45.4 or later

Affected products

Product	Affected versions	Fixed in
mediawiki mediawiki	1.43.0 ≤ v < 1.43.9, 1.44.0 ≤ v < 1.44.6, 1.45.0 ≤ v < 1.45.4, 1.46.0	1.43.9, 1.44.6, 1.45.4

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.