The following table shows all versions and their support state:
| Version | Supported |
|---|---|
| 1.0.x (1.16) | ❌ |
| 1.1.x (1.17) | ❌ |
| 1.2.x (1.18) | ❌ |
| 1.3.x (1.19) | ❌ |
| 1.4.x (1.20) | ✅ (LTS) |
| 1.5.x (1.21) | ✅ (Beta) |
Minecraft datapacks shouldn't have any vulnerabilities normally, but if you do find any issues feel free to open an issue here on github.