EOL Bootstrap Security Patches — Versions 3.4.1 & 4.6.2

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php2shell patches (CVE-2026-109618 and CVE-2026-109619) for EOL PHP are out now. With sales replies slower than usual due to high demand, the fastest route to patched packages is to buy ELS for Runtimes online (opens in new tab). Read the patch FAQ

TuxCare keeps you ahead of threats by proactively tracking and patching new CVEs impacting Bootstrap. View all security fixes available to date here.

Keep Running.
Skip the Risks.

Upgrading end-of-life Bootstrap can be disruptive, resource-intensive, and costly.

TuxCare’s ELS keeps your legacy and EOL components secure, compliant, and stable – without the risks of costly upgrades.

Trusted by
Innovators
Around the World

What Does Endless Lifecycle Support Include?

Rapid CVE Response

Rapid SLA-backed security patches for Bootstrap for as long as you need

Complete Coverage

Security fixes for both direct and transitive dependencies in Bootstrap AT NO EXTRA COST

Preserved Compatibility

Extensively tested updates designed to work flawlessly with your existing code

Seamless Integration

Plug-and-play integration with your existing workflows and CI/CD pipelines

Secure Distribution

Signed, tamper-proof Bootstrap security updates delivered from trusted, TuxCare-hosted repositories

Trusted Support

24/7 expert assistance with Bootstrap vulnerability triage, security patch requests, and troubleshooting

Secure Every Layer of Your OSS
Dependency Tree for the Long Run

End-of-life risk rarely lives in your top-level packages. It hides in the transitive
dependencies woven throughout your open-source stack.

When one of those libraries becomes vulnerable, every downstream component
must be rebuilt and validated.

TuxCare automates this entire process – tracking vulnerable EOL
libraries, applying security fixes, and rebuilding dependent components
– ensuring your full dependency chain stays secure and stable.

How Does It Work?

1

We onboard new projects and enable 24/7 automated CVE tracking – monitoring the NVD, vendor, and GitHub security advisories, and other sources.

2

Once CVEs are detected, we backport upstream fixes using algorithmic and AI-assisted automation, with expert validation to ensure accuracy.

3

Patches are compiled in a binary format, extensively tested (for integrity, functionality, and regression), signed, and deployed to ELS repositories.

4

Your package managers, build tools, or orchestrators check for updates, then automatically pull and install them.

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Trusted Software Supply Chain

With Endless Lifecycle Support, every release is transparent,
secure, and built to industry standards you can trust.

Software Bill of Materials (SBOM)

Gain complete visibility into the components in each patched release so you always know exactly what is running in your environment.

Vulnerability Exploitability eXchange (VEX) Context

See which vulnerabilities in your SBOM have already been remediated, allowing you to focus attention where action is still required.

SLSA Level 3 Compliance*

Get packages that meet SLSA Level 3 requirements, giving you verifiable assurance of secure sourcing, building, and integrity. * Coming soon

Built for Your Stack

ELS for Bootstrap is built to install easily and run with your existing workflows

TuxCare has successfully resolved

more than 14,000 CVEs

in open-source software - keeping enterprise
systems secure and compliant

Check It Out

Need Coverage for Other End-of-Life
Open-Source Components?

TuxCare’s ELS extends security patching to your operating systems, runtimes,
libraries and production apps, keeping your entire open-source stack secure, stable,
and compatible for as long as you need.

Endless Lifecycle Support
for Operating Systems

Keep your legacy Linux servers patched and compliant – no risky rebuilds, downtime, hardware upgrades, or added workload.

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Endless Lifecycle Support
for Runtimes

Keep your apps running safely on the runtimes they were built for, without rushed upgrades or broken code – even after official support ends.

Learn more

Endless Lifecycle Support
for Libraries

Keep securely running your apps on EOL libraries – without rushed upgrades, costly code rewrites, or disruption to your roadmap.

Learn more

Endless Lifecycle Support
for Applications

Ensure your EOL apps stay secure and operational while avoiding outages, broken workflows, and code rewrites.

Learn more

We’ve Been Powering Enterprise-Grade Patching At
Unprecedented Scale – and We're Just Getting Started

2,700+
Enterprise Clients

70,000+Packages Curated

420,000+
Patches Delivered

14,000+
Vulnerabilities Fixed

11,000+
Kernels Supported

70+
Linux Distro Versions Supported

Why TuxCare?

15 years of proven excellence in open-source patching have created highly
automated processes and systems, providing:

Extensive Coverage of Open-Source Technologies

We provide long-term security across your entire stack, supporting a wide and continually expanding set of open-source projects, libraries, and runtimes – all from a single, trusted partner.

Efficiencies in Build Chains and Testing

We utilize advanced automation across CVE discovery, backporting, building, and release workflows to accelerate delivery and ensure the highest possible quality of security patches.

Identification and Patching of Transitive Dependencies

We go beyond surface-level scanning to uncover and fix hidden vulnerabilities deep in your dependency trees, securing the entire software supply chain with precision and scale.

Fast and Consistent Delivery of Patches with Supporting SLAs

Automated pipelines and mature workflows ensure rapid, reliable patch delivery backed by SLAs – giving you confidence in your risk management and compliance posture.

Frequently Asked Questions

No. Bootstrap 3 reached end of life in July 2019 and Bootstrap 4 support ended January 1, 2023. Neither line receives fixes of any kind, security included. ELS for Bootstrap continues issuing security patches for both.

Yes. Bootstrap isn't only CSS — its JavaScript components have a documented history of XSS issues in tooltips, popovers, and data-attribute handling. All of it runs in the browser, directly reachable by user input, and Bootstrap 3 and 4 both add jQuery to the picture.

Bootstrap 3.2.0, 3.3.6, 3.3.7, 3.4.1, 4.1.1, 4.1.3, and 4.6.2. Other versions are available on request.

You can defer it indefinitely. Bootstrap 5 drops jQuery, renames data attributes to data-bs-*, reworks the grid and utility classes, and changes form markup — which in practice means touching every template. ELS keeps you patched while you decide whether that rebuild earns its cost.

No. Fixes are backported into your existing version, so class names, breakpoints, Sass variables, and compiled output stay compatible. Templates and custom themes need no edits, though interactive components are still worth testing before release.

Usually, yes — Bootstrap 3 and 4 both depend on it, and it's a separate ELS product. ELS for jQuery covers 1.8.2, 1.12.4, 2.2.4, and 3.4.1, so the framework and its jQuery dependency can be patched together.

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