CVE-2026-58025: Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files…

PriorityP359critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

0.50%

40.0th percentile

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.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
mediawiki	mediawiki	—	—
mediawiki	mediawiki	>= 1.43.0 < 1.43.9	1.43.9
mediawiki	mediawiki	>= 1.44.0 < 1.44.6	1.44.6
mediawiki	mediawiki	>= 1.45.0 < 1.45.4	1.45.4
wikimedia_foundation	mediawiki	>= * < 1.46.0, 1.45.4, 1.44.6, 1.43.9	1.46.0, 1.45.4, 1.44.6, 1.43.9

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv4.05.9MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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