CVE-2026-84810
mediumclaude-skill-antivirus fails to analyze executable files when scanning local skill directories, reading only SKILL.md while ignoring Python source, bytecode, a…
claude-skill-antivirus fails to analyze executable files when scanning local skill directories, reading only SKILL.md while ignoring Python source, bytecode, and other artifacts in the scripts directory. Attackers can distribute skills with malicious code in non-manifest files that receive a SAFE verdict with 100/100 trust score despite containing unanalyzed executable payloads.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/claude-world/claude-skill-antivirus disclosure@vulncheck.com
- https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/scanner/index.js disclosure@vulncheck.com
- https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/utils/downloader.js disclosure@vulncheck.com
- https://github.com/claude-world/claude-skill-antivirus/issues/33 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/claude-skill-antivirus-analysis-bypass-via-manifest-o... disclosure@vulncheck.com
- https://github.com/nedlir/skills-scanner-bypass 134c704f-9b21-4f2e-91b3-4a467353bcc0
