Bootstrap 4 · Version Status
Bootstrap 4 End of Life Date
Bootstrap 4 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
⚠
Bootstrap 4 is past end of life. This version no longer receives security patches. 1224 days past EOL — migrate to a supported version immediately.
EOL Date
Jan 1, 2023
1224 days past EOL
Latest Release
4.6.2
LTS release
Release Date
Jan 18, 2018
Bootstrap 4 series
| Version | Latest | EOL Date | Status |
|---|
| 2 |
2.3.2 |
Aug 19, 2013 |
EOL |
| 3 LTS |
3.4.1 |
Jul 24, 2019 |
EOL |
| → 4 LTS |
4.6.2 |
Jan 1, 2023 |
EOL |
| 5 LTS |
5.3.8 |
EOL |
Active |
What does Bootstrap 4 end of life mean?
When Bootstrap 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 Bootstrap 4 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Bootstrap 5 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Bootstrap 4 reach end of life?
Bootstrap 4 reached end of life on January 1, 2023. This version is no longer receiving security patches.
Is Bootstrap 4 still supported?
No. Bootstrap 4 reached end of life on January 1, 2023 and is no longer receiving security patches.
What should I upgrade to from Bootstrap 4?
The recommended upgrade from Bootstrap 4 is
Bootstrap 5 — the latest actively supported version. Check the
Bootstrap full timeline for all supported versions.
What are the security risks of running Bootstrap 4 past EOL?
When Bootstrap 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 Bootstrap should migrate immediately or implement compensating controls.