Jetty 8.1.0.RC2 and earlier computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.

Multiple cross-site scripting (XSS) vulnerabilities in the WebApp JSP Snoop page in Mort Bay Jetty 6.1.x through 6.1.21 allow remote attackers to inject arbitrary web script or HTML via the PATH_INFO to the default URI under (1) jspsnoop/, (2) jspsnoop/ERROR/, and (3) jspsnoop/IOException/, and possibly the PATH_INFO to (4) snoop.jsp.

Multiple cross-site scripting (XSS) vulnerabilities in Mort Bay Jetty 6.x and 7.0.0 allow remote attackers to inject arbitrary web script or HTML via (1) the query string to jsp/dump.jsp in the JSP Dump feature, or the (2) Name or (3) Value parameter to the default URI for the Session Dump Servlet under session/.

Mort Bay Jetty 6.x through 6.1.22 and 7.0.0 writes backtrace data without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator, related to (1) a string value in the Age parameter to the default URI for the Cookie Dump Servlet in test-jetty-webapp/src/main/java/com/acme/CookieDump.java under cookie/, (2) an alphabetic value in the A parameter to jsp/expr.jsp, or (3) an alphabetic value in the Content-Length HTTP header to an arbitrary application.

The Dump Servlet in Mort Bay Jetty 6.x and 7.0.0 allows remote attackers to obtain sensitive information about internal variables and other data via a request to a URI ending in /dump/, as demonstrated by discovering the value of the getPathTranslated variable.

Cross-site scripting (XSS) vulnerability in the CookieDump.java sample application in Mort Bay Jetty 6.1.19 and 6.1.20 allows remote attackers to inject arbitrary web script or HTML via the Value parameter in a GET request to cookie/.