Vulnerability DatabaseCVE-2026-84810
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CVE-2026-84810
Published:September 02, 2026
Updated:October 12, 2026
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.
Related Resources (8)
https://nvd.nist.gov/vuln/detail/CVE-2026-84810
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84810.json
https://github.com/claude-world/claude-skill-antivirus
https://www.vulncheck.com/advisories/claude-skill-antivirus-analysis-bypass-via-manifest-only-local-directory-scan
https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/scanner/index.js
https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/utils/downloader.js
https://github.com/claude-world/claude-skill-antivirus/issues/33
https://github.com/nedlir/skills-scanner-bypass
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CVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Protection Mechanism Failure
CWE-693
EPSS
Base Score:
0.32