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.
Published: 2026-09-30
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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History

Tue, 06 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 01 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia mediawiki-wikilambda Extension
Vendors & Products Wikimedia
Wikimedia mediawiki-wikilambda Extension

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
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'}


Subscriptions

Wikimedia Mediawiki-wikilambda Extension
cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2026-10-06T18:25:30.800Z

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

Link: CVE-2026-103446

cve-icon Vulnrichment

Updated: 2026-10-01T15:50:01.111Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-10-06T19:17:39.550

Link: CVE-2026-103446

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T19:30:11Z

Weaknesses
  • CWE-639

    Authorization Bypass Through User-Controlled Key