CVE-2026-103446 - Vulnerability Details - OpenCVE

Authorization bypass through User-Controlled key vulnerability in The Wikimedia Foundation MediaWiki WikiLambda extension allows Authentication Bypass.

This issue affects MediaWiki WikiLambda extension: 1.46.

Attack Vector Network

Attack Complexity High

Privileges Required Low

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

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/If2c05b109672fc65f63372f86c768859dc6639fd
https://phabricator.wikimedia.org/T435086

History

Wed, 30 Sep 2026 17:30:00 +0000

Type	Values Removed	Values Added
Description		Authorization bypass through User-Controlled key vulnerability in The Wikimedia Foundation MediaWiki WikiLambda extension allows Authentication Bypass. This issue affects MediaWiki WikiLambda extension: 1.46.
Title		WikiLambda exposes anonymous execution of unsaved Abstract Wikipedia fragments
Weaknesses		CWE-639
References		https://gerrit.wikimedia.org/r/q/If2c05b109672fc65f63372f86c768859dc6639fd https://phabricator.wikimedia.org/T435086
Metrics		cvssV4_0 `{'score': 7.4, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/S:N/AU:Y/R:U/V:C/RE:M/U:Amber'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published: 2026-09-30T17:13:02.339Z

Updated: 2026-09-30T17:13:02.339Z

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

Link: CVE-2026-103446

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

Published: 2026-09-30T18:18:17.017

Modified: 2026-09-30T19:05:23.307

Link: CVE-2026-103446

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-30T20:15:05Z

Weaknesses

CWE-639

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