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ATR-2026-00121criticalSkill Compromiseexperimental

Malicious Code in Skill Package

Detects malicious code patterns in SKILL.md files and associated scripts. 100% of confirmed malicious skills contain malicious code patterns (Snyk ToxicSkills, Feb 2026). Real campaigns: ClawHavoc delivered AMOS infostealer via base64-obfuscated payloads; threat actor "zaycv" published 40+ skills with automated malware generation; password-protected ZIP evasion bypasses static analysis. CVE-2026-25253 (CVSS 8.8): OpenClaw RCE via auth token exfiltration affecting 40,000+ instances.

Severity
critical
Category
Skill Compromise
Scan Target
skill
Author
ATR Community

Response Actions

block toolalertquarantine session

References

OWASP Agentic
ASI04:2026 - Supply Chain CompromiseASI05:2026 - Unexpected Code Execution
OWASP LLM
LLM03:2025 - Supply Chain Vulnerabilities