High advisory for Highflame ramparts 0.8.1

Advisory overview

Highflame ramparts 0.8.1 through 0.8.10 contains a security scan bypass vulnerability that allows attackers to hide malicious payloads because collect_bundle_siblings and walk_bundle_subdir skip nested directories and .pyc files. Attackers can distribute a skill bundle with an unchecked-hash .pyc under scripts/<subdir>/__pycache__/ that ramparts silently ignores, while CPython executes it when the skill runs.

Related references

• https://github.com/highflame-ai/ramparts
• https://github.com/highflame-ai/ramparts/blob/v0.8.10/src/skills.rs#L898
• https://github.com/highflame-ai/ramparts/issues/154
• https://www.vulncheck.com/advisories/highflame-ramparts-0.8.1-through-0.8.10-skill-bundle-scan-bypass-via-nested-pyc