Package Instance

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Multiple cross-site scripting (XSS) vulnerabilities in Apache Struts 2.0.x before 2.0.11.1 and 2.1.x before 2.1.1 allow remote attackers to inject arbitrary web script or HTML via vectors associated with improper handling of (1) " (double quote) characters in the href attribute of an s:a tag and (2) parameters in the action attribute of an s:url tag.

Apache Struts forced double OGNL evaluation
Apache Struts 2.x before 2.3.29 allows remote attackers to execute arbitrary code via a "%{}" sequence in a tag attribute, aka forced double OGNL evaluation.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-0785.

Improperly Controlled Modification of Dynamically-Determined Object Attributes
Apache Struts 2.0.0 to 2.5.20 forced double OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution.

Apache Struts 2 is Missing XML Validation
Missing XML Validation vulnerability in Apache Struts, Apache Struts.

This issue affects Apache Struts: from 2.0.0 before 2.2.1; Apache Struts: from 2.2.1 through 6.1.0.

Users are recommended to upgrade to version 6.1.1, which fixes the issue.

Cross-site Scripting
Cross-site scripting (XSS) vulnerability in the `URLDecoder` function in JRE, as used in Apache Struts, when using a single byte page encoding, allows remote attackers to inject arbitrary web script or HTML via multi-byte characters in an url-encoded parameter.

Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
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.

Apache Struts has a Denial of Service vulnerability
Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion.

This issue affects Apache Struts: from 2.0.0 through 6.7.4, from 7.0.0 through 7.0.3.

Users are recommended to upgrade to version 6.8.0 or 7.1.1, which fixes the issue.

Files or Directories Accessible to External Parties
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.

Remote code execution in Apache Struts
Forced OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution.

Improper Input Validation
Apache Struts 2.0.0 through 2.3.24.1 does not properly cache method references when used with OGNL before 3.0.12, which allows remote attackers to cause a denial of service (block access to a web site) via unspecified vectors.

Improper Input Validation
`XSLTResult` in Apache Struts allows remote attackers to execute arbitrary code via the stylesheet location parameter.