CVE-2026-84810
claude-skill-antivirus Analysis Bypass via Manifest-Only Local Directory Scan
- State
- Published
- Severity
- 7.1 High
- Published
- Sep 2, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 2, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N | VulnCheck |
Weaknesses
- CWE-693 Protection Mechanism Failure
Affected Products
| Product | Versions |
|---|---|
claude-skill-antivirusclaude-world |
|
References
- GitHub Issue #33issue-tracking
- https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/utils/downloader.jstechnical-description
- https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/scanner/index.jstechnical-description
- https://github.com/claude-world/claude-skill-antivirusproduct
- VulnCheck Advisory: claude-skill-antivirus Analysis Bypass via Manifest-Only Local Directory Scanthird-party-advisory
- https://github.com/nedlir/skills-scanner-bypassexploit
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