A JAR dependency is flagged in Cassandra 3.11.10 as having vulnerabilities that have been fixed in newer releases. The following is the Cassandra 3.11.10 source tree for their JAR dependencies: https://github.com/apache/cassandra/tree/181a4969290f1c756089b2993a638fe403bc1314/lib .
JAR org.apache.thrift_libthrift version 0.9.2 has the following vulnerability and is fixed in version 0.9.3-1. Recommendation is to upgrade to version 0.9.3-1 or greater.
|CVE-2016-5397||8.8||The Apache Thrift Go client library exposed the potential during code generation for command injection due to using an external formatting tool. Affected Apache Thrift 0.9.3 and older, Fixed in Apache Thrift 0.10.0.||https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-5397||org.apache.thrift_libthrift||0.9.2||high||.||CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H|
|CVE-2018-1320||7.5||Apache Thrift Java client library versions 0.5.0 through 0.11.0 can bypass SASL negotiation isComplete validation in the org.apache.thrift.transport.TSaslTransport class. An assert used to determine if the SASL handshake had successfully completed could be disabled in production settings making the validation incomplete.||https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-1320||org.apache.thrift_libthrift||0.9.2||high||.||CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N|
|CVE-2019-0205||7.5||In Apache Thrift all versions up to and including 0.12.0, a server or client may run into an endless loop when feed with specific input data. Because the issue had already been partially fixed in version 0.11.0, depending on the installed version it affects only certain language bindings.||https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-0205||org.apache.thrift_libthrift||0.9.2||high||.||CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H|
A possible fix strategy is to simply update the JAR to their newest version.