Jekyll 1 · Version Status
Jekyll 1 End of Life Date
Jekyll 1 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
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Jekyll 1 is past end of life. This version no longer receives security patches. 4567 days past EOL — migrate to a supported version immediately.
EOL Date
May 7, 2014
4567 days past EOL
Latest Release
1.5.1
Standard release
Release Date
May 6, 2013
Jekyll 1 series
Where these dates come from
End of lifeMay 7, 2014endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees ReleaseMay 6, 2013endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees Confidence: high = two or more independent sources agree (the vendor's page read by our adapter, a person's check against the vendor, the dataset the date came from); medium = one; low = the vendor page disagrees or our last read is stale.
How we source dates.
Lifecycle detail
Jekyll 1 was released on May 6, 2013 and support ended on May 7, 2014 — a supported lifespan of 1 year, shorter than the 1 year and 6 months median for Jekyll releases. Its latest release on record is 1.5.1, published March 28, 2014 — 40 days before support ended. It has been past its end-of-life date for 12 years and 6 months. 2 newer Jekyll releases have shipped since.
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 Jekyll 1 support options
Some vendors and third parties sell security patches beyond end of life; whether one covers this version varies. Compare your options.
Compare Options →
| Version | Latest | EOL Date | Status |
|---|
| 0 |
0.9.0 |
May 7, 2014 |
EOL |
| → 1 |
1.5.1 |
May 7, 2014 |
EOL |
| 2 |
2.5.3 |
Oct 27, 2015 |
EOL |
| 3 |
3.10.0 |
EOL |
Active |
| 4 |
4.4.1 |
EOL |
Active |
What does Jekyll 1 end of life mean?
When Jekyll 1 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: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running Jekyll 1 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Jekyll 4 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Jekyll 1 reach end of life?
Jekyll 1 reached end of life on May 7, 2014. This version is no longer receiving security patches.
Is Jekyll 1 still supported?
No. Jekyll 1 reached end of life on May 7, 2014 and is no longer receiving security patches.
What should I upgrade to from Jekyll 1?
The recommended upgrade from Jekyll 1 is
Jekyll 4 — the latest actively supported version. Check the
Jekyll full timeline for all supported versions.
What are the security risks of running Jekyll 1 past EOL?
Since Jekyll 1 reached end of life, the maintainers no longer issue security patches. Any CVEs disclosed after the EOL date accumulate with no vendor fix. A CVE-based scan does not show this — it is the CVE blind spot; some scanners flag unsupported versions of common products, but coverage varies and none give the date in advance. Organizations running EOL Jekyll should migrate immediately or implement compensating controls.