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Medium · 5.9 Public exploit CVE-2026-58025 EUVD-2026-41031GHSA-28rr-rpqp-g8c8

Remote Code Execution via Unsafe Deserialization in LogItem Import

Published Jul 1, 2026 · Updated Jul 1, 2026 · Assigned by wikimedia-foundation

Vendor: Wikimedia Foundation Product: MediaWiki Package: mediawiki Package: mediawiki Category: Web / CMS Ecosystem: Debian Ecosystem: Ubuntu

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.

Affected products

VendorProductAffectedFixed
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

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 mediawiki 1:1.43.9+dfsg-1 —
Debian 13 mediawiki 1:1.43.9+dfsg-1~deb13u1 —
Debian 12 mediawiki No fix yet —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 26.10 mediawiki No fix yet —
Ubuntu 26.04 LTS mediawiki No fix yet —
Ubuntu 25.10 mediawiki No fix yet —
Ubuntu 18.04 LTS mediawiki No fix yet —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 24.04 LTS mediawiki No fix yet —
Ubuntu Pro 22.04 LTS mediawiki No fix yet —
Ubuntu Pro 20.04 LTS mediawiki No fix yet —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • shinthink/CVE-2026-58025 ★ 5 · Jul 29, 2026

    CVE-2026-58025 — MediaWiki Deserialization RCE via Log Entry Import. LogEntryBase::extractParams() unserialize() user-controlled log_params. CVSS 9.8 | CWE-502 | MediaWiki < 1.43.9, < 1.44.6, < 1.45.…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

References