Caucho Quercus, as distributed in Resin before 4.0.29, does not properly implement the == (equals sign equals sign) operator for comparisons, which has unspecified impact and context-dependent attack vectors.

Caucho Quercus, as distributed in Resin before 4.0.29, allows remote attackers to bypass intended restrictions on filename extensions for created files via a %00 sequence in a pathname within an HTTP request.

Multiple cross-site scripting (XSS) vulnerabilities in resin-admin/digest.php in Caucho Technology Resin Professional 3.1.5, 3.1.10, 4.0.6, and possibly other versions allow remote attackers to inject arbitrary web script or HTML via the (1) digestrealm or (2) digestusername parameters. NOTE: some of these details are obtained from third party information.