{"id":44027,"date":"2026-04-12T03:23:03","date_gmt":"2026-04-12T03:23:03","guid":{"rendered":"http:\/\/localhost\/?p=44027"},"modified":"2026-04-12T03:23:03","modified_gmt":"2026-04-12T03:23:03","slug":"rack-rackdirectory-info-disclosure-and-dos-via-unescaped-regex-interpolation","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=44027","title":{"rendered":"Rack: Rack::Directory info disclosure and DoS via unescaped regex interpolation_CVE-2026-34763"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Directory interpolates the configured root path directly into a regular expression when deriving the displayed directory path. If root contains regex metacharacters such as +, *, or ., the prefix stripping can fail and the generated directory listing may expose the full filesystem path in the HTML output. 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