Unspecified vulnerability was found in Apache Tomcat. Malicious users can exploit this vulnerability via improper handing of overflow in the UTF-8 decoder to cause denial of service.

Apache Tomcat 9.x earlier than 9.0.8
Apache Tomcat 8.5.x earlier than 8.5.34
Apache Tomcat 8.x earlier than 8.0.53
Apache Tomcat 7.x earlier than 7.0.89

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Apache Tomcat 9.x Security Vulnerabilities