cert-manager 1.18 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
cert-manager 1.18 reached end of life on 10 Mar 2026. It no longer receives security fixes.
152 days without security patches
Recommended action: upgrade to cert-manager 1.21. Check your version# cmctl must be installed separately, see https://cert-manager.io/docs/reference/cmctl/.
Support timeline
Official dates from the cert-manager release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 10 Jun 2025 | — |
| End of life | 10 Mar 2026 | 0.4 years ago |
| Latest release | 1.18.6 · 24 Feb 2026 | final |
Where to go from 1.18
Recommended target: cert-manager 1.21.
The newest actively supported branch is cert-manager 1.21 (latest release 1.21.1).
Frequently asked questions
Is cert-manager 1.18 still safe to use?
cert-manager 1.18 reached end of life on 10 Mar 2026, 152 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download cert-manager 1.18?
Yes — the final release (1.18.6) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade cert-manager 1.18 to?
Upgrade to cert-manager 1.21, the newest actively supported branch.