Latest major version in terms of semantic versioning is supported.
| Version | Supported |
|---|---|
| 1.x.x | ✅ |
| < 1.0 | ❌ |
Security issues are a special case. If you find a security hole in a YOURLS project, disclosing it to the public with opening an issue is not the ideal.
Make 100% sure it is a security hole (same process as bug reports) but instead of opening an issue, send an email to yourls@yourls.org.