Fix CVEs in open source software without breaking your stack

Seal fixes the unfixable across your software supply chain, backported, in-place patches for app dependencies, OS packages, and container images, so you reach audit-ready faster without upgrades or breaking changes.

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Secure, scalable patches across your entire open source stack

Software security dashboard showing vulnerable packages with counts for critical, high, medium, and low severity. A pop-up window titled 'Create sealing rule' displays for package ejs version 2.7.4 with 3 open vulnerabilities rated 9.8 critical, allowing creation of a remote sealing rule to replace version 2.7.4 with 2.7.4-safest in the app-demo project.
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Discover 
vulnerabilities

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One click to Seal packages in all repos

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Remediate vulnerabilities independently from dev teams

End-to-end
open source security

Secure open source vulnerabilities
without impacting your development

Strengthen your supply chain with patches for both direct and transitive dependencies.

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Uphold compliance and meet customer SLAs

Maintain vulnerability-free images to ensure you meet your customers' SLA requirements and successfully pass any security audit, including FedRAMP, PCI DSS 4.0, and NYDFS 500.

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Secure legacy and hard-to-manage code

Streamline the process of fixing security issues in old or legacy code. Address vulnerabilities in difficult-to-patch applications—even those outside your control.

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Secure containers and base images

Use our collection of regularly maintained base images or secure your existing images without upgrading—even if you're running older distributions.

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One platform to fix every
open source vulnerability

Seal Security diagram showing automatic backported patches applied to app dependencies, transitive dependencies, containers & images, legacy/EOL apps, and AI generated code, resulting in reduced risk, faster remediation, and continuous compliance.

Why customers choose Seal Security

We’ll fix critical and high CVEs across your apps, OS, and containers, so you stay protected and compliant without upgrades or complex migrations.

Automatic remediation, with control

Automatically patch CVEs across the versions you already run, without waiting on engineering cycles. Keep full visibility and control with clear approvals, tracking, and confidence in every change.

No roadmap disruption

Patch in place without forcing upgrades, migrations, or breaking changes that derail planned releases. Security remediation happens in parallel, so product teams keep shipping.

Shorten the exploitation window

Reduce exposure time by moving from finding to fixing fast. Seal delivers production-ready patches for critical and high vulnerabilities on a defined SLA, so remediation does not sit in backlog.

Fix the “unfixable”

Remediate vulnerabilities in legacy, end-of-life, and hard-to-maintain components where upgrades are risky or not possible. Eliminate critical and high findings even when upstream has moved on.

Pass every security scan

Keep builds clean of critical and high findings across application dependencies, OS packages, and container images. Make scan outcomes predictable, repeatable, and easier to prove during customer reviews and audits.

Highly audited packages

Use highly audited, traceable patched packages that strengthen your supply chain. Get clear provenance and verification for each fix, so you can trust what you ship and document it when needed.

Latest research and publications

Navigating FedRAMP Compliance for Open Source Software with Seal Security Thumbnail Image
Whitepaper

Navigating FedRAMP Compliance for Open Source Software with Seal Security

In this eBook, we outline how FedRAMP sets clear guidelines to ensure all software components—including open source libraries, application dependencies, container images, and OS components are kept secure.

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Brochure

Consider Your Open Source Vulnerabilities SEALED

Seal Security is redefining open source vulnerability management by enabling companies to automate and scale their open source vulnerability remediation efforts. Our unique approach allows security and development teams to streamline and automate their security patching process offering standalone security patches that can be applied independently from the regular update process.

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Update

CVSS 10.0 CVE in React & Next.js. Get a free patch!

A critical CVSS 10.0 RCE vulnerability (CVE-2025-55182) was disclosed in React and Next.js, allowing unauthenticated attackers to execute code through malformed payloads sent to React Server Components and Server Function endpoints. Get your free patch for CVE-2025-55182, secure your React and Next.js apps.

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Frequently asked questions

Discover how Seal Security identifies and patches open source vulnerabilities without breaking changes.

Is Seal Security a scanning solution?
How does Seal provide patches?
How do I know that Seal won’t break my code?
Which Linux distributions does Seal Security support?
Do Seal Base Images include SBOMs and cryptographic signatures?
What programming languages does Seal Security support?
How does Seal Security help with compliance requirements?
What is Seal Security’s SLA for new vulnerabilities?