An attacker can manipulate file upload params to enable paths traversal and under some circumstances this can lead to uploading a malicious file which can be used to perform Remote Code Execution. Users are recommended to upgrade to versions Struts 2.5.33 or Struts 6.3.0.2 or greater to fix this issue.
When a Multipart request is performed but some of the fields exceed the maxStringLength limit, the upload files will remain in struts.multipart.saveDir even if the request has been denied. Users are recommended to upgrade to versions Struts 2.5.32 or 6.1.2.2 or Struts 6.3.0.1 or greater, which fixe this issue.
Cross-site scripting (XSS) vulnerability in (1) LookupDispatchAction and possibly (2) DispatchAction and (3) ActionDispatcher in Apache Software Foundation (ASF) Struts before 1.2.9 allows remote attackers to inject arbitrary web script or HTML via the parameter name, which is not filtered in the resulting error message.
Cross-site scripting (XSS) vulnerability in Apache Struts before 1.2.9-162.31.1 on SUSE Linux Enterprise (SLE) 11, before 1.2.9-108.2 on SUSE openSUSE 10.3, before 1.2.9-198.2 on SUSE openSUSE 11.0, and before 1.2.9-162.163.2 on SUSE openSUSE 11.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to "insufficient quoting of parameters."
ActionForm in Apache Software Foundation (ASF) Struts before 1.2.9 with BeanUtils 1.7 allows remote attackers to cause a denial of service via a multipart/form-data encoded form with a parameter name that references the public getMultipartRequestHandler method, which provides further access to elements in the CommonsMultipartRequestHandler implementation and BeanUtils.
Apache Software Foundation (ASF) Struts before 1.2.9 allows remote attackers to bypass validation via a request with a 'org.apache.struts.taglib.html.Constants.CANCEL' parameter, which causes the action to be canceled but would not be detected from applications that do not use the isCancelled check.
The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{…} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.
Forced OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution.
ActionServlet.java in Apache Struts mishandles multithreaded access to an ActionForm instance, which allows remote attackers to execute arbitrary code or cause a denial of service (unexpected memory access) via a multipart request, a related issue to CVE-2015-0899.
Apache Commons BeanUtils does not suppress the class property, which allows remote attackers to "manipulate" the ClassLoader and execute arbitrary code via the class parameter, as demonstrated by the passing of this parameter to the getClass method of the ActionForm object in Struts
Multiple cross-site scripting (XSS) vulnerabilities in Apache Struts allow remote attackers to inject arbitrary web script or HTML via (1) the name parameter to struts-examples/upload/upload-submit.do, or the message parameter to (2) struts-cookbook/processSimple.do or (3) struts-cookbook/processDyna.do.