GHSA-qprx-q2r7-3rx6 Improper Input Validation in Apache Tomcat

• Maven org.apache.tomcat:tomcat: < 6.0.40 → fixed in 6.0.40 • Maven org.apache.tomcat:tomcat: >= 7.0.0, < 7.0.54 → fixed in 7.0.54 • Maven org.apache.tomcat:tomcat: >= 8.0.0, < 8.0.6 → fixed in 8.0.6 • Maven org.apache.tomcat:tomcat-catalina: < 6.0.40 → fixed in 6.0.40 • Maven org.apache.tomcat:tomcat-catalina: >= 7.0.0, < 7.0.54 → fixed in 7.0.54 • Maven org.apache.tomcat:tomcat-catalina: >= 8.0.0, < 8.0.6 → fixed in 8.0.6

java/org/apache/catalina/servlets/DefaultServlet.java in the default servlet in Apache Tomcat before 6.0.40, 7.x before 7.0.53, and 8.x before 8.0.4 does not properly restrict XSLT stylesheets, which allows remote attackers to bypass security-manager restrictions and read arbitrary files via a crafted web application that provides an XML external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.