Tailwind CSS 4.0 · Version Status
Tailwind CSS 4.0 End of Life Date
Tailwind CSS 4.0 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.
⚠
Tailwind CSS 4.0 is past end of life. This version no longer receives security patches. 563 days past EOL — migrate to a supported version immediately.
EOL Date
Apr 1, 2025
563 days past EOL
Latest Release
4.0.17
Standard release
Release Date
Jan 21, 2025
Tailwind CSS 4.0 series
Lifecycle detail
Tailwind CSS 4.0 was released on January 21, 2025 and support ended on April 1, 2025 — a supported lifespan of 2 months, in line with the 3 months median for Tailwind CSS releases. The last patch it will ever receive is 4.0.17, published March 26, 2025 — 6 days before support ended. It has been without security patches for 1 year and 7 months. 2 newer Tailwind CSS 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 Tailwind CSS 4.0 support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →
All Tailwind CSS Versions
| Version | Latest | EOL Date | Status |
|---|
| 1.0 |
1.0.6 |
Aug 6, 2019 |
EOL |
| 1.1 |
1.1.4 |
Feb 5, 2020 |
EOL |
| 1.2 |
1.2.0 |
Apr 20, 2020 |
EOL |
| 1.3 |
1.3.5 |
Apr 29, 2020 |
EOL |
| 1.4 |
1.4.6 |
Jul 15, 2020 |
EOL |
| 1.5 |
1.5.2 |
Jul 28, 2020 |
EOL |
| 1.6 |
1.6.3 |
Aug 18, 2020 |
EOL |
| 1.7 |
1.7.6 |
Sep 4, 2020 |
EOL |
What does Tailwind CSS 4.0 end of life mean?
When Tailwind CSS 4.0 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 Tailwind CSS 4.0 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Tailwind CSS 4.3 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Tailwind CSS 4.0 reach end of life?
Tailwind CSS 4.0 reached end of life on April 1, 2025. This version is no longer receiving security patches.
Is Tailwind CSS 4.0 still supported?
No. Tailwind CSS 4.0 reached end of life on April 1, 2025 and is no longer receiving security patches.
What should I upgrade to from Tailwind CSS 4.0?
The recommended upgrade from Tailwind CSS 4.0 is
Tailwind CSS 4.3 — the latest actively supported version. Check the
Tailwind CSS full timeline for all supported versions.
What are the security risks of running Tailwind CSS 4.0 past EOL?
When Tailwind CSS 4.0 reaches end of life, the maintainers stop issuing 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 Tailwind CSS should migrate immediately or implement compensating controls.