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CRITICAL · 9.8

CVE-2026-58025

Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/WikiImporter.Php, includes/Import/WikiRevision....

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MediawikiMediawiki>= 1.43.0, < 1.43.9

Related Weaknesses (CWE)

CWE-94CWE-502

References

FAQ

What is CVE-2026-58025?

CVE-2026-58025 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/WikiImporter.Php, includes/Import/WikiRevision....

How severe is CVE-2026-58025?

CVE-2026-58025 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-58025?

Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki.