| Version | Supported |
|---|---|
| 4.x | ✅ Supported |
| 3.x | ✅ Supported via the support/3 LTS branch |
| < 3.x | ❌ Not supported |
Security fixes for 3.x should be prepared against support/3. Security fixes for the current major release line should be prepared against main and develop as appropriate.
Send us an email at security@acquia.com; do not open a public issue. For more details, see Acquia's responsible disclosure policy.