Chainguard is a software supply chain security company focused on producing secure, signed container images and related tooling such as OpenVEX for vulnerability-exception metadata. Its products harden the build and deployment side of the pipeline by providing minimal, verifiable images and provenance, complementing but not replacing code and dependency scanning tools.
What Is Chainguard?
Chainguard is a company dedicated to securing the software supply chain by providing trusted container images and open-source tooling. Its core mission, as highlighted in their communications, is to make software secure by default through minimal, signed artifacts and robust provenance. Key products include:
-
Chainguard Images: Secure container images built from scratch with only essential packages.
-
OpenVEX: A specification for Vulnerability Exploitability eXchange, used to document vulnerability context and reduce false positives.
-
Tooling for provenance and SBOMs: Ensures transparency from build to deployment.
According to Chainguard's official documentation, this approach addresses the risk of compromised dependencies and tampered artifacts in modern cloud-native environments.
How Do Chainguard Secure Images Work?
Chainguard secure container images differ fundamentally from regular images by design. They are constructed to minimize attack surface and provide cryptographic assurance.
Key characteristics include:
-
Minimal Base: Images contain only the strictly necessary packages, stripping out unused components that could harbor vulnerabilities.
-
Cryptographic Signing: Each image is signed, allowing you to verify its integrity and origin before deployment.
-
Regular Updates and Scanning: Images are continuously updated and scanned. According to the Overview of Chainguard Repository, this ensures they meet high-security standards.
-
Provenance and SBOMs: Every image comes with a software bill of materials (SBOM) and build provenance, creating an auditable trail.
Research shows that minimal, signed images significantly reduce supply chain risk by eliminating unnecessary code and ensuring the artifact hasn't been altered.
What Is Chainguard OpenVEX and How Does It Manage Vulnerabilities?
OpenVEX (Vulnerability Exploitability eXchange) is an open-source specification developed by Chainguard to add context to vulnerability data. It solves the problem of alert fatigue by allowing teams to declare why a known CVE is not exploitable in their specific environment.
How OpenVEX works:
-
Contextual Exceptions: If a vulnerability exists in a package but isn't reachable or used in your deployment, you can create an OpenVEX document to mark it as "not affected."
-
Integration with Scanners: Tools can consume OpenVEX data to suppress false positives, focusing efforts on real threats.
-
Standardized Format: As an open standard, it promotes interoperability across the security ecosystem.
Data indicates that image provenance and SBOM adoption are rising across enterprises, and 2026 studies reveal increasing adoption of VEX formats like OpenVEX for providing crucial vulnerability context.
Where Does Chainguard Fit in the Software Supply Chain?
The software supply chain spans development, build, deployment, and runtime phases. Chainguard primarily operates in the build and deployment stages, securing the artifacts that move from CI/CD pipelines to production.
Its role:
-
Post-Build Hardening: After code is compiled and packaged, Chainguard ensures the resulting container images are minimal and signed.
-
Artifact Security: It focuses on the containers and binaries themselves, rather than the source code or dependencies during development.
-
Complementary Position: According to the Report: Chainguard Business Breakdown, securing container images is a critical layer that prevents attacks leveraging compromised build pipelines.
By providing verifiable images, Chainguard reduces risk at the point of deployment, which is where many supply chain attacks manifest.
Chainguard vs Traditional CVE Scanners: What's the Difference?
Chainguard and traditional CVE scanners (like Snyk or Dependabot) address distinct but complementary security concerns. Understanding the difference is key to a layered defense strategy.
Traditional CVE Scanners focus on identifying known vulnerabilities in source code, dependencies, and already-installed packages. They are reactive, scanning for CVEs and suggesting patches.
Chainguard focuses on proactively securing the container images and build artifacts you deploy. It reduces the attack surface by design and ensures artifact integrity through signing and provenance.
In short, CVE scanners tell you what's wrong with your code; Chainguard ensures what you deploy is inherently more secure and trustworthy.
Chainguard vs Traditional CVE Scanners Comparison
| Aspect | Chainguard | Traditional CVE Scanners |
|---|---|---|
| Primary Focus | Secure container images and build/deployment artifacts | Code and dependency vulnerability scanning |
| Security Approach | Proactive: reduces attack surface via minimal, signed images | Reactive: identifies known vulnerabilities (CVEs) in existing code |
| Key Output | Signed, minimal container images with SBOMs and provenance | Vulnerability reports, alerts, and patch recommendations |
| Stage in Supply Chain | Build and deployment | Development and CI/CD (pre/post-installation) |
| Example Tools/Products | Chainguard Images, OpenVEX, Chainguard Registry | Snyk, Dependabot, Trivy, OWASP Dependency-Check |
How Can You Use Chainguard Alongside Pre-Execution Scanning Tools?
Pre-execution scanning tools, such as Sigil, analyze code, packages, and MCP servers before they execute on a developer's machine, catching behavior-based threats like hidden install hooks or obfuscated code. Chainguard complements this by securing the container images that may ultimately host that code in production.
A practical integrated workflow:
-
Code/package scanning: Use Sigil to clone, audit, and quarantine risky AI agent code or npm packages based on behavioral analysis.
-
Image provisioning: For code that passes inspection, build or deploy it using Chainguard's secure, minimal base images.
-
Layered defense: This combination covers the attack surface from code ingestion to runtime. Sigil guards the code entering your environment; Chainguard guards the deployment artifacts.
According to The State of Trusted Open Source: March 2026, combining multiple security controls at different pipeline stages is essential for modern development, especially in AI tooling ecosystems.
What is Chainguard and what problem does it solve?
Chainguard is a software supply chain security company that solves the problem of insecure and tampered container images in build and deployment pipelines. It provides minimal, cryptographically signed images and tools like OpenVEX to reduce attack surface, ensure artifact integrity, and manage vulnerability context, making deployments inherently more trustworthy.
How do Chainguard secure container images differ from regular images?
Chainguard images are built from scratch with a minimal set of packages, drastically reducing the attack surface compared to bloated regular images. They are cryptographically signed for provenance, regularly updated, and come with SBOMs. This contrasts with typical images which often contain unnecessary software and lack verifiable signatures.
What does Chainguard OpenVEX do in the supply chain?
Chainguard OpenVEX provides a standardized format for documenting vulnerability exploitability context. It allows security teams to declare why a known CVE is not a threat in their specific environment (e.g., because the vulnerable component isn't used), reducing false-positive alerts from scanners and streamlining vulnerability management workflows.
Is Chainguard a replacement for SCA or code scanning tools?
No, Chainguard is not a replacement for Software Composition Analysis (SCA) or code scanning tools. It is a complementary solution. SCA tools scan source code and dependencies for vulnerabilities, while Chainguard secures the container images and artifacts post-build. For comprehensive security, you need both layers.
How would you use Chainguard together with pre-execution scanners like Sigil?
Use Sigil to behaviorally scan and approve code, packages, or MCP servers before they run on your machine. Then, for deployment, use Chainguard's secure images as the base for containers hosting that approved code. This creates a dual gate: Sigil blocks malicious code pre-execution, and Chainguard ensures the deployment artifact is minimal and signed.
Key Takeaways
-
Chainguard's core value is providing trusted, minimal, and signed container images to secure the build/deployment phase.
-
OpenVEX adds crucial context to vulnerability data, helping teams reduce false positives and focus on real threats.
-
Chainguard is not a CVE scanner; it complements tools like Snyk or Dependabot by securing artifacts, not scanning code.
-
Integrating Chainguard with pre-execution scanners (e.g., Sigil) offers layered defense across the entire software supply chain.
-
Adoption of image signing, SBOMs, and VEX is growing, making Chainguard's approach increasingly relevant for 2026 security postures.
About the Author
Reece Frazier is the founder of NOMARK. He got tired of watching developers blindly clone repos with 12 GitHub stars and full access to their API keys, so he built Sigil.