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OpenAdvisories
High · 7.2 Public exploit CVE-2026-103442 EUVD-2026-90075GHSA-7c6r-9xcw-h46m

MergeAccount PHP object injection via session-key substitution

Published Sep 30, 2026 · Updated Nov 9, 2026 · Assigned by wikimedia-foundation

Description

External control of system or configuration setting vulnerability in The Wikimedia Foundation MediaWiki CentralAuth extension allows Code Injection.

This issue affects MediaWiki CentralAuth extension: 1.46, 1.45, and 1.43.

Affected products

VendorProductAffectedFixed
The Wikimedia Foundation MediaWiki CentralAuth extension 1.46, 1.45, 1.43 —

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

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

Advisories 1

References