CVE-2026-103442

MergeAccount PHP object injection via session-key substitution

Published Sep 30, 2026 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia mediawiki - Centralauth Extension
Vendors & Products Wikimedia
Wikimedia mediawiki - Centralauth Extension
Type Values Removed Values Added
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.
Title MergeAccount PHP object injection via session-key substitution
Weaknesses CWE-15
References
Metrics cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
wikimedia-foundation
Published
Updated
Nov 9, 2026, 4:30 PM
Reserved
Sep 30, 2026, 3:41 PM
Status
Awaiting Analysis
Published
Sep 30, 2026, 4:17 PM
Modified
Nov 9, 2026, 5:17 PM