Knockout.js 3.4 · Version Status
Knockout.js 3.4 End of Life Date
Knockout.js 3.4 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Knockout.js 3.4 is past end of life. This version no longer receives security patches. 2694 days past EOL — migrate to a supported version immediately.
EOL Date
Feb 21, 2019
2694 days past EOL
Latest Release
3.4.2
Standard release
Release Date
Nov 17, 2015
Knockout.js 3.4 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 Knockout.js 3.4 support is available
Commercial vendors offer security patches beyond EOL — compare your options.
Compare Options →
| Version | Latest | EOL Date | Status |
|---|
| 3.0 |
3.3.0 |
Nov 17, 2015 |
EOL |
| → 3.4 |
3.4.2 |
Feb 21, 2019 |
EOL |
| 3.5 |
3.5.3 |
EOL |
Active |
What does Knockout.js 3.4 end of life mean?
When Knockout.js 3.4 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 Knockout.js 3.4 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Knockout.js 3.5 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Knockout.js 3.4 reach end of life?
Knockout.js 3.4 reached end of life on February 21, 2019. This version is no longer receiving security patches.
Is Knockout.js 3.4 still supported?
No. Knockout.js 3.4 reached end of life on February 21, 2019 and is no longer receiving security patches.
What should I upgrade to from Knockout.js 3.4?
The recommended upgrade from Knockout.js 3.4 is
Knockout.js 3.5 — the latest actively supported version. Check the
Knockout.js full timeline for all supported versions.
What are the security risks of running Knockout.js 3.4 past EOL?
When Knockout.js 3.4 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 Knockout.js should migrate immediately or implement compensating controls.