CVE-2026-103442 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity High

Privileges Required High

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://gerrit.wikimedia.org/r/q/I9c59e5c3f217c1eaa02934a076604049bac2b025
https://phabricator.wikimedia.org/T435624

History

Wed, 30 Sep 2026 16:15:00 +0000

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		https://gerrit.wikimedia.org/r/q/I9c59e5c3f217c1eaa02934a076604049bac2b025 https://phabricator.wikimedia.org/T435624
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'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published: 2026-09-30T16:09:40.369Z

Updated: 2026-09-30T16:09:40.369Z

Reserved: 2026-09-30T15:41:01.270Z

Link: CVE-2026-103442

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

Published: 2026-09-30T16:17:10.050

Modified: 2026-09-30T16:27:40.143

Link: CVE-2026-103442

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-30T18:00:17Z

Weaknesses

CWE-15

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