Vulnerability in Claude-World Claude-Skill-Antivirus
CVE-2026-84810
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/claude-world/claude-skill-antivirus/issues/33 (issue-tracking)
- github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/utils/downloader… (technical-description)
- github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/scanner/index.js (technical-description)
- github.com/claude-world/claude-skill-antivirus (product)
- www.vulncheck.com/advisories/claude-skill-antivirus-analysis-bypass-via-manifes… (third-party-advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
Frequently asked questions
- What is CVE-2026-84810?
- CVE-2026-84810 is a medium-severity vulnerability in Claude-World Claude-Skill-Antivirus, classified under Protection Mechanism Failure. CVSS score: 6.5/10. Published 2026-09-02.
- How severe is CVE-2026-84810?
- Medium severity. CVSS v3 base score is 6.5 out of 10.