Caucho Resin contains a path traversal vulnerability in the documentation webapp (resin-doc) that allows remote unauthenticated attackers to read arbitrary files by supplying a relative path through the inputFile request parameter of the jndi-appconfig tutorial servlet. Attackers can craft requests with directory traversal sequences to the servlet endpoint to read files outside the intended tutorial directory on the underlying system. Exploitation evidence was first observed by the Shadowserver Foundation on 2021-12-10.

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.

Oracle Mojarra 1.214 and 2.0.2, as used in IBM WebSphere Application Server, Caucho Resin, and other applications, does not properly handle an unencrypted view state, which allows remote attackers to conduct cross-site scripting (XSS) attacks or execute arbitrary Expression Language (EL) statements via vectors that involve modifying the serialized view object.

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.

Caucho Technology Resin 2.1.12 allows remote attackers to gain sensitive information and view the contents of the /WEB-INF/ directory via an HTTP request for "WEB-INF..", which is equivalent to "WEB-INF" in Windows.