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.

Directory traversal vulnerability in the HTTP server in Mort Bay Jetty 5.1.14, 6.x before 6.1.17, and 7.x through 7.0.0.M2 allows remote attackers to access arbitrary files via directory traversal sequences in the URI.

Cross-site scripting (XSS) vulnerability in Mort Bay Jetty before 6.1.17 allows remote attackers to inject arbitrary web script or HTML via a directory listing request containing a ; (semicolon) character.

Jetty before 4.2.27, 5.1 before 5.1.12, 6.0 before 6.0.2, and 6.1 before 6.1.0pre3 generates predictable session identifiers using java.util.random, which makes it easier for remote attackers to guess a session identifier through brute force attacks, bypass authentication requirements, and possibly conduct cross-site request forgery attacks.

Unspecified vulnerability in Jetty before 5.1.6 allows remote attackers to obtain source code of JSP pages, possibly involving requests for .jsp files with URL-encoded backslash ("%5C") characters. NOTE: this might be the same issue as CVE-2006-2758.

HttpRequest.java in Jetty HTTP Server before 4.2.19 allows remote attackers to cause denial of service (memory usage and application crash) via HTTP requests with a large Content-Length.