CVE-2026-58025 PUBLISHED

Remote Code Execution via Unsafe Deserialization in LogItem Import

Assigner: wikimedia-foundation
Reserved: 27.06.2026 Published: 01.07.2026 Updated: 01.07.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L
CVSS Score: 5.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	Low
Attack Complexity	High	Integrity	High	Integrity	Low
Attack Requirements	None	Availability	Low	Availability	Low
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Wikimedia Foundation
Product	MediaWiki
Versions	Default: unaffected affected from * to 1.46.0, 1.45.4, 1.44.6, 1.43.9 (excl.)

References

https://phabricator.wikimedia.org/T422244

Problem Types

CWE-502 Deserialization of untrusted data CWE
CWE-94 CWE