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CVE-2026-103442: CWE-15 External control of system or configuration setting in The Wikimedia Foundation MediaWiki CentralAuth extension

0
High
VulnerabilityCVE-2026-103442cvecve-2026-103442cwe-15
Published: 09/30/2026 (09/30/2026, 16:09:40 UTC)
Source: CVE Database V5
Vendor/Project: The Wikimedia Foundation
Product: MediaWiki CentralAuth extension

Description

CVE-2026-103442 is a high-severity vulnerability in The Wikimedia Foundation MediaWiki CentralAuth extension versions 1.43, 1.45, and 1.46. It involves external control of system or configuration settings, which can lead to code injection. The vulnerability requires high privileges and user interaction to exploit and has a complex attack vector. No explicit patch or remediation details are provided in the available data.

CVSS v4.0

Score 7.2high

Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
High
User Interaction
Passive
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
Low
Subsq. Confidentiality
High
Subsq. Integrity
High
Subsq. Availability
Low
Scope
N
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

Affected software

The Wikimedia Foundation

MediaWiki CentralAuth extension

Affected versions
=1.46=1.45=1.43
GitHub Actionsmore threats →ai
wikimedia/mediawiki-extensions-CentralAuth
pkg:github/wikimedia/mediawiki-extensions-CentralAuth
Affected versions
=1.43=1.45=1.46

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/30/2026, 17:34:08 UTC

Technical Analysis

The MediaWiki CentralAuth extension versions 1.43, 1.45, and 1.46 contain a CWE-15 vulnerability that allows external control of system or configuration settings, resulting in potential code injection. The CVSS 4.0 score is 7.2, indicating a high severity. The attack vector is network-based but requires high attack complexity, privileges, and user interaction. The vulnerability impacts confidentiality, integrity, and availability with high scope impact. No vendor advisory or patch information is provided.

Potential Impact

Successful exploitation could allow an attacker with high privileges and user interaction to inject code via external control of system or configuration settings in the CentralAuth extension. This can compromise system confidentiality, integrity, and availability. However, exploitation requires complex conditions and elevated privileges.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, administrators should monitor for updates from The Wikimedia Foundation and apply any official fixes once available. Until then, restrict access to high-privilege accounts and limit user interactions that could trigger this vulnerability.

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Technical Details

Data Version
5.2
Assigner Short Name
wikimedia-foundation
Date Reserved
2026-09-30T15:41:01.270Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6abd368b2a4e24523d3a8d1e

Added to database: 09/30/2026, 16:19:23 UTC

Last enriched: 09/30/2026, 17:34:08 UTC

Last updated: 09/30/2026, 22:54:25 UTC

Views: 6

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