Knative 1.21 · Version Status
Knative 1.21 End of Life Date
Knative 1.21 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
⚡
Knative 1.21 reaches end of life on August 4, 2026. Plan your migration now — 16 days remaining.
📅 Get reminded before Knative 1.21 reaches EOL on August 4, 2026 — alerts 90, 30 & 7 days out.
EOL Date
Aug 4, 2026
16 days remaining
Latest Release
1.21.3
Standard release
Release Date
Jan 27, 2026
Knative 1.21 series
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
Extended Support
Extended Knative 1.21 support is available
Commercial vendors offer security patches beyond EOL — compare your options.
Compare Options →
| Version | Latest | EOL Date | Status |
|---|
| 0.13 |
0.13.3 |
Aug 18, 2020 |
EOL |
| 0.14 |
0.14.3 |
Sep 29, 2020 |
EOL |
| 0.15 |
0.15.0 |
Nov 10, 2020 |
EOL |
| 0.16 |
0.16.0 |
Dec 22, 2020 |
EOL |
| 0.17 |
0.17.1 |
Feb 2, 2021 |
EOL |
| 0.18 |
0.18.2 |
Mar 16, 2021 |
EOL |
| 0.19 |
0.19.0 |
May 18, 2021 |
EOL |
| 0.20 |
0.20.0 |
Jun 29, 2021 |
EOL |
What does Knative 1.21 end of life mean?
When Knative 1.21 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Knative 1.21 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to a supported version or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Knative 1.21 reach end of life?
Knative 1.21 reached end of life on August 4, 2026. That is 16 days remaining.
Is Knative 1.21 still supported?
Knative 1.21 is still supported but approaching end of life on August 4, 2026. Begin planning your migration now.
What should I upgrade to from Knative 1.21?
What are the security risks of running Knative 1.21 past EOL?
When Knative 1.21 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Knative should migrate immediately or implement compensating controls.