CVE-2026-103046 - Vulnerability Details - OpenCVE

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda extension allows Stored XSS. This issue affects MediaWiki - WikiLambda extension: before 1.46.1.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Wikimedia	Mediawiki-wikilambda Extension

No data.

No data.

References

Link	Providers
https://gerrit.wikimedia.org/r/c/1307827
https://phabricator.wikimedia.org/T428829

History

Wed, 30 Sep 2026 20:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Wikimedia Wikimedia mediawiki-wikilambda Extension
Vendors & Products		Wikimedia Wikimedia mediawiki-wikilambda Extension
Metrics		cvssV3_1 `{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 29 Sep 2026 22:45:00 +0000

Type	Values Removed	Values Added
Description		Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda extension allows Stored XSS. This issue affects MediaWiki - WikiLambda extension: before 1.46.1.
Title		WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTML
Weaknesses		CWE-79
References		https://gerrit.wikimedia.org/r/c/1307827 https://phabricator.wikimedia.org/T428829

MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published: 2026-09-29T22:41:36.099Z

Updated: 2026-09-30T20:01:03.715Z

Reserved: 2026-09-29T22:29:32.001Z

Link: CVE-2026-103046

Vulnrichment

Updated: 2026-09-30T18:15:21.246Z

NVD

Status : Awaiting Analysis

Published: 2026-09-29T23:17:22.450

Modified: 2026-09-30T21:17:07.800

Link: CVE-2026-103046

Redhat

No data.

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