Only the latest major version is supported with security updates.

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

Once your report is received, the project maintainers will review it and respond accordingly. We appreciate your responsible disclosure and will make every effort to address the issue in a timely manner.

Thank you for helping us maintain the security of Twig-CS-Fixer!