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Your Open Source Stack is Growing,
So Is the Risk of Unpatched Vulnerabilities.

Stay CVE-free without upgrades, rewrites, or slow patch cycles.

Remediate in minutes. Maintain compliance. Keep building.

See How it Works

From Vulnerable to CVE-Free in 3 Simple Steps

Kosai transforms how enterprises secure open source software. Our trusted remediation engine delivers fully tested, production-grade patches on demand, across all layers of your stack without disruption. Whether you're securing modern frameworks or maintaining legacy code, Kosai makes continuous OSS protection simple, scalable, and automatic.
1

Request Coverage

Tell us which open source components you need secured, runtimes, frameworks, or libraries and Kosai will handle the rest.
2

Patch Generation & Validation

Our multi-model GenAI engine continuously scans, builds, and tests patches for any OSS, whether actively maintained, end-of-life, or abandonware. Every patch is verified for reliability and CVE closure, including for transitive dependencies.
3

Outcomes That Scale With Your Stack

We deliver drop-in patches in your preferred format. You stay in control, run your pipeline, validate with confidence, and ship secure code fast. Kosai’s precision and speed reduce your CVE backlog and future-proof your software supply chain.

Outcomes You Can Count On

Stay secure, fast, and audit-ready.

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Effortless OSS Security

Drop-in patches, continuously maintained, no rewrites, replatforming, or rebuilds required

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Audit-Ready Compliance

Meet today’s regulatory demands with provable CVE closure and a secure software supply chain.

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Zero CVEs, Zero Disruptions

Fix vulnerabilities across your stack without introducing downtime or engineering overhead.

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Engineer Time Back

Stop patching manually. Let your teams focus on growth, not CVE triage.

Built for Your Stack

Drop-in fixes across your OSS stack:

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“We eliminated over 400 CVEs across legacy and transitive dependencies, with zero developer overhead.”

Director of Platform Security

Global Fintech
“We had legacy PHP 5 code powering critical systems. Kosai delivered secure, production-ready patches without requiring a rewrite, something no other vendor could offer.”

VP of Engineering

Global E-Commerce Platform
“Our engineering team stopped burning time on CVEs. Kosai just delivered working patches, fast, accurate, and tested.”

Head of DevSecOps

Enterprise Software Vendor