{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/products/mediawiki-extensions/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["MediaWiki Extensions"],"_cs_severities":["critical"],"_cs_tags":["vulnerability","web-application","mediawiki"],"_cs_type":"advisory","_cs_vendors":["MediaWiki"],"content_html":"\u003cp\u003eMultiple vulnerabilities have been identified within various MediaWiki extensions. These flaws allow remote, unauthenticated, or low-privileged attackers to achieve several malicious objectives, including arbitrary code execution (ACE) on the host server, bypass of security controls, and the execution of persistent or reflected cross-site scripting (XSS) attacks. Furthermore, the vulnerabilities may enable attackers to manipulate application data or gain unauthorized access to sensitive information stored within the MediaWiki environment. Due to the modular nature of MediaWiki, the impact varies based on which extensions are installed and enabled on a specific instance. Organizations using MediaWiki should audit their installed extensions and apply updates provided by the respective maintainers as soon as they become available.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities can lead to full server compromise, session hijacking through XSS, and the loss of confidentiality and integrity of the wiki's data. Depending on the server configuration, arbitrary code execution could allow for lateral movement within the network or the establishment of persistence. All organizations hosting instances of MediaWiki are considered at risk if they utilize vulnerable third-party or bundled extensions.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAudit the list of currently installed and enabled MediaWiki extensions to identify those affected by the reported vulnerabilities.\u003c/li\u003e\n\u003cli\u003eMonitor the official MediaWiki extension repository and individual maintainer channels for security patches corresponding to identified vulnerable extensions.\u003c/li\u003e\n\u003cli\u003eImplement strict input validation and access controls for all web-facing MediaWiki instances.\u003c/li\u003e\n\u003cli\u003eReview web server logs for suspicious HTTP requests targeting extension-specific API endpoints or unusual parameters that may indicate exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-09-28T16:15:16Z","date_published":"2026-09-28T16:15:16Z","id":"https://feed.craftedsignal.io/briefs/2026-09-mediawiki-vulnerabilities/","summary":"Multiple vulnerabilities across various MediaWiki extensions allow remote attackers to perform arbitrary code execution, security bypasses, cross-site scripting, and unauthorized data manipulation or disclosure.","title":"Multiple Critical Vulnerabilities in MediaWiki Extensions","url":"https://feed.craftedsignal.io/briefs/2026-09-mediawiki-vulnerabilities/"}],"language":"en","title":"CraftedSignal Threat Feed - MediaWiki Extensions","version":"https://jsonfeed.org/version/1.1"}