Bootstrap End of Life Dates
framework
Developers working on front-end web development projects often require a reliable and efficient framework to create responsive, mobile-first designs. Bootstrap, a free and open-source CSS framework, has been a go-to solution since its creation, providing a comprehensive set of HTML, CSS, and JavaScript-based design templates for various interface components. Maintained by a community of dedicated developers, Bootstrap has become a staple in the web development ecosystem, with its versatility and customizability making it a favorite among developers.
The end-of-life landscape for Bootstrap is characterized by a total of four versions, with three of them having already reached their end-of-life. The last version to reach its end-of-life was version 4, which occurred on January 1, 2023. Currently, only one version of Bootstrap remains active, with no announced end-of-life date. This means that developers can continue to use and rely on the latest stable version, 5.3.8, without worrying about immediate support cessation. The lack of announced end-of-life dates for the active version provides developers with a sense of stability and continuity.
From a security perspective, Bootstrap has an impressive track record, with a total of zero CVEs tracked, and consequently, zero critical CVEs. This means that developers using Bootstrap do not have to worry about known security vulnerabilities in the framework. As a result, no specific version is deemed most affected, and there is no need for immediate action to address security concerns. With its clean security slate and active maintenance, Bootstrap remains a secure and reliable choice for developers, allowing them to focus on building robust and responsive web applications without undue security concerns.
Last updated: Jul 24, 2026
| Version | Released | Active support | EOL date | Until EOL | Latest | CVEs | Status | Alert me |
|---|---|---|---|---|---|---|---|---|
| 5 LTS | May 5, 2021 | — | No | — | 5.3.8 | — | Active | |
| 4 LTS | Jan 18, 2018 | Nov 1, 2021 | Jan 1, 2023 | 1300d ago | 4.6.2 | — | EOL | |
| 3 LTS | Aug 19, 2013 | Sep 5, 2016 | Jul 24, 2019 | 2557d ago | 3.4.1 | — | EOL | |
| 2 | Jan 31, 2012 | Aug 19, 2013 | Aug 19, 2013 | 4722d ago | 2.3.2 | — | EOL |
Data sourced from endoflife.date · CVE data from NVD
