The Challenge
With the introduction of the EU Cyber Resilience Act, your compliance team faces a significant challenge: tracking and proving lifecycle management for every component in your software supply chain. The regulation demands processes "from purchasing to decommissioning" for every product. However, there's no standardized way to encode when a component reaches end-of-life, when security support stops, or when a vendor declares a product obsolete. Without a machine-readable format, automation is impossible.
OWASP identified this gap and launched the Common Lifecycle Enumeration (CLE) project to create a standardized vocabulary for lifecycle events. The goal: develop a system that works across vendors, integrates with existing tools, and meets compliance requirements like those set by the EU Cyber Resilience Act.
The Environment and Constraints
The OWASP team faced several constraints:
Regulatory Pressure: The EU Cyber Resilience Act mandates lifecycle management. Your organization must demonstrate continuous oversight from acquisition to decommissioning. Manual tracking is impractical when managing numerous dependencies.
Fragmented Ecosystem: Before CLE, lifecycle information was scattered across vendor announcements, support portals, and documentation. There was no consistent schema or shared vocabulary, making it impossible to integrate this data into existing security tools.
Integration Requirements: The solution needed to work with existing Software Bill of Materials (SBOM) standards. Your team likely uses CycloneDX or SPDX for dependency tracking. A lifecycle standard requiring separate infrastructure would be counterproductive.
Standards Body Credibility: For broad adoption, the project needed backing beyond a single organization. The OWASP Common Lifecycle Enumeration project aims to become an ECMA International standard, providing the institutional weight necessary for enterprise adoption and regulatory acceptance.
The Approach Taken
OWASP designed CLE as an enumeration—a controlled vocabulary defining specific lifecycle events in a machine-readable format. This isn't a new database or tracking system but a standardized way to express existing events.
The project focuses on encoding events like:
- End-of-life declarations
- End-of-support dates
- Security update cessation
- Product obsolescence
- Version deprecation
The critical design decision was to integrate with CycloneDX rather than create a competing standard. CycloneDX already structures components in your SBOM, and CLE extends it by adding lifecycle event metadata. When a vendor declares end-of-support for a library, that event can now appear in your SBOM as structured data.
This integration means your existing tools can consume lifecycle information without needing a separate parsing layer. Your dependency scanner already reads CycloneDX, and now it can alert you when a component reaches end-of-life.
Results and Metrics
Though still in development, the architectural decisions are yielding benefits:
Automation Potential: Before CLE, your team manually checked vendor announcements and security advisories. With standardized lifecycle events in your SBOM, you can automate alerts for components nearing end-of-life. Your CI/CD pipeline can flag builds that include components past their support date.
Supply Chain Visibility: Lifecycle events in your SBOM provide visibility across your entire supply chain. If a critical library announces end-of-support in six months, you see every affected application—not just those your team directly maintains.
Compliance Evidence: The EU Cyber Resilience Act requires documented lifecycle management processes. CLE provides the technical foundation for generating that evidence. Your compliance team can produce reports showing when components were added, reached end-of-life, and were replaced—all from machine-readable data.
Lessons and Considerations
Standards development involves balancing completeness with adoption speed. A more comprehensive initial specification might have delayed ECMA standardization. The current approach—focusing on core lifecycle events first—allows organizations to start implementing while the standard evolves.
The integration with CycloneDX was a strategic choice, but it creates a dependency. Organizations not using CycloneDX face a steeper adoption curve. Documenting integration patterns with SPDX could accelerate adoption across the ecosystem.
Takeaways for Your Team
Start Preparing Now: The EU Cyber Resilience Act is active. Even if you're not directly subject to EU regulations, your customers might be. Begin documenting your lifecycle management processes before you need to prove compliance.
Evaluate Your SBOM Tooling: If you're not generating SBOMs with CycloneDX, assess what it would take to add that capability. The lifecycle management benefits extend beyond CLE—you need accurate dependency tracking for vulnerability management.
Identify Your Lifecycle Blind Spots: Map out where lifecycle information resides in your organization. Which vendors provide machine-readable end-of-life data? Which require manual monitoring? As CLE adoption grows, prioritize vendors who support standardized lifecycle events.
Plan for Automation: Manual lifecycle tracking isn't scalable. Design your processes assuming you'll eventually automate lifecycle event monitoring. That means structured data, not spreadsheets or wiki pages.
Watch the ECMA Standardization: Once CLE becomes an ECMA standard, expect vendor adoption to accelerate. Major tool vendors will add support. Plan your implementation timeline accordingly.
The key insight: compliance requirements like the EU Cyber Resilience Act are here to stay. Standards like CLE provide the technical infrastructure to meet those requirements at scale. Your team can either build custom tracking systems or adopt standards that integrate with your existing tools. The latter approach scales better and reduces long-term maintenance burdens.
Start by generating CycloneDX SBOMs for your critical applications. When CLE support arrives in your tools, you'll already have the foundation in place.
