Adobe Acrobat Reader Plugin before 8.0.0 for the Firefox, Internet Explorer, and Opera web browsers allows remote attackers to force the browser to make unauthorized requests to other web sites via a URL in the (1) FDF, (2) xml, and (3) xfdf AJAX request parameters, following the # (hash) character, aka "Universal CSRF and session riding."

Multiple cross-site scripting (XSS) vulnerabilities in Adobe Acrobat Reader Plugin before 8.0.0, and possibly the plugin distributed with Adobe Reader 7.x before 7.1.4, 8.x before 8.1.7, and 9.x before 9.2, for Mozilla Firefox, Microsoft Internet Explorer 6 SP1, Google Chrome, Opera 8.5.4 build 770, and Opera 9.10.8679 on Windows allow remote attackers to inject arbitrary JavaScript and conduct other attacks via a .pdf URL with a javascript: or res: URI with (1) FDF, (2) XML, and (3) XFDF AJAX parameters, or (4) an arbitrarily named name=URI anchor identifier, aka "Universal XSS (UXSS)."

Adobe Acrobat Reader Plugin before 8.0.0, and possibly the plugin distributed with Adobe Reader 7.x before 7.1.4, 8.x before 8.1.7, and 9.x before 9.2, when used with Internet Explorer, Google Chrome, or Opera, allows remote attackers to cause a denial of service (memory consumption) via a long sequence of # (hash) characters appended to a PDF URL, related to a "cross-site scripting issue."