The current reference implementation is under active development.

Security fixes are provided for the latest released version.

If you discover a security vulnerability in the CKS reference implementation, please report it responsibly.

Please avoid creating a public GitHub issue for vulnerabilities that could affect users before they are investigated.

Instead, contact the project maintainer directly through GitHub.

When reporting a vulnerability, please include:

• a description of the issue;
• affected version;
• reproduction steps;
• expected behavior;
• actual behavior;
• any proof-of-concept if available.

The project aims to:

1. acknowledge reports promptly;
2. investigate the reported issue;
3. determine severity and impact;
4. prepare an appropriate fix;
5. publish the fix in a future release;
6. acknowledge the reporter when appropriate.

At the current stage of development, the primary security considerations are:

• parser robustness;
• malformed input handling;
• denial-of-service through pathological input;
• deterministic validator behavior;
• safe serialization and deserialization.

The CKS reference implementation does not execute arbitrary code and does not intentionally expose network services.

Please allow reasonable time for investigation and remediation before publicly disclosing security vulnerabilities.

Responsible disclosure helps protect users while fixes are prepared.

CKS is designed around several principles that naturally support secure implementations:

• immutable data structures;
• deterministic execution;
• observational purity;
• explicit validation;
• canonical serialization;
• implementation independence.

These principles reduce classes of implementation errors and improve predictability, but they do not eliminate the need for ongoing security review.