Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda… (CVE-2026-103046)
A stored cross-site scripting (XSS) vulnerability exists in the Wikimedia Foundation MediaWiki WikiLambda extension prior to version 1.46.1. This vulnerability arises from improper neutralization of input during web page generation, allowing malicious scripts to be stored and executed in users' browsers.
AI Analysis
Technical Summary
The Wikimedia Foundation MediaWiki WikiLambda extension before version 1.46.1 contains a stored cross-site scripting (XSS) vulnerability due to improper input neutralization during web page generation. This flaw allows attackers to inject malicious scripts that are stored and later executed in the context of users visiting affected pages. No CVSS score or detailed exploitation information is provided. No known exploits in the wild have been reported.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of users' browsers, potentially leading to session hijacking, defacement, or other malicious actions within the affected MediaWiki instance.
Mitigation Recommendations
Upgrade the MediaWiki WikiLambda extension to version 1.46.1 or later, where this vulnerability has been fixed. No other mitigation guidance is provided.
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda… (CVE-2026-103046)
Description
A stored cross-site scripting (XSS) vulnerability exists in the Wikimedia Foundation MediaWiki WikiLambda extension prior to version 1.46.1. This vulnerability arises from improper neutralization of input during web page generation, allowing malicious scripts to be stored and executed in users' browsers.
Affected software
pkg:github/wikimedia/mediawiki-wikilambdaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Wikimedia Foundation MediaWiki WikiLambda extension before version 1.46.1 contains a stored cross-site scripting (XSS) vulnerability due to improper input neutralization during web page generation. This flaw allows attackers to inject malicious scripts that are stored and later executed in the context of users visiting affected pages. No CVSS score or detailed exploitation information is provided. No known exploits in the wild have been reported.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of users' browsers, potentially leading to session hijacking, defacement, or other malicious actions within the affected MediaWiki instance.
Mitigation Recommendations
Upgrade the MediaWiki WikiLambda extension to version 1.46.1 or later, where this vulnerability has been fixed. No other mitigation guidance is provided.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-wgjv-5xcv-4jq5
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-103046"]
- State
- PUBLISHED
Threat ID: 6abc5d44680226ef6899ba62
Added to database: 09/30/2026, 00:52:20 UTC
Last enriched: 09/30/2026, 01:07:30 UTC
Last updated: 09/30/2026, 03:31:47 UTC
Views: 6
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