The Circuit Knitting Toolbox supports one minor version release at a time, both for bug and security fixes. For example, if the most recent release is 0.2.1, then the 0.2.x release series is currently supported.

To report vulnerabilities, you can privately report a potential security issue via the GitHub security vulnerabilities feature. This can be done here:

https://github.com/Qiskit-Extensions/circuit-knitting-toolbox/security/advisories

Please do not open a public issue about a potential security vulnerability.

You can find more details on the security vulnerability feature in the GitHub documentation here:

https://docs.github.com/en/code-security/security-advisories/guidance-on-reporting-and-writing/privately-reporting-a-security-vulnerability