CVE-2026-34095 action=raw with Special:Mypage subpage title responds with "Content-Type: text/html" on ctype=text/javascript request

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Actions/ActionEntryPoint.Php, includes/Request/FauxResponse.Php. This issue affects MediaWiki: from before 1.43.7, 1.44.4, 1.45.2...