CyberRota Analysis
AI-GeneratedThe EmbedVideo Extension for MediaWiki versions prior to 4.1.0 is vulnerable to an injection flaw that allows users with editing privileges to inject malicious HTML or JavaScript into error messages, leading to potential code execution in the context of the wiki for other users. This vulnerability poses a high risk, particularly for organizations using MediaWiki for collaborative content management, as it can compromise the integrity of the platform and expose users to cross-site scripting (XSS) attacks. Administrators should prioritize upgrading to version 4.1.0 or later to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
The EmbedVideo Extension is a MediaWiki extension which adds a parser function called #ev and various parser tags for embedding video clips from various video sharing services. Prior to 4.1.0, EmbedServiceFactory::newFromName in includes/EmbedService/EmbedServiceFactory.php interpolates an attacker-controlled unknown service name into exception text, and includes/EmbedVideo.php returns that text as HTML through the isHtml output path without neutralization. Both the #ev parser function and the evl parser form can reach this error path. A user able to edit a wiki page can inject stored HTML or JavaScript into the error output, causing code to execute in the wiki origin for visitors who render the page. This issue is fixed in version 4.1.0.