{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-84810", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-02T10:19:32.992Z", "datePublished": "2026-09-02T16:59:49.506Z", "dateUpdated": "2026-09-02T18:02:22.959Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-02T16:59:49.506Z"}, "datePublic": "2026-08-10T00:00:00.000Z", "title": "claude-skill-antivirus Analysis Bypass via Manifest-Only Local Directory Scan", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Protection Mechanism Failure", "cweId": "CWE-693", "type": "CWE"}]}], "affected": [{"vendor": "claude-world", "product": "claude-skill-antivirus", "defaultStatus": "unaffected", "packageURL": "pkg:npm/claude-skill-antivirus", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "2.1.3"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/claude-world/claude-skill-antivirus/issues/33", "tags": ["issue-tracking"], "name": "GitHub Issue #33"}, {"url": "https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/utils/downloader.js", "tags": ["technical-description"]}, {"url": "https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/scanner/index.js", "tags": ["technical-description"]}, {"url": "https://github.com/claude-world/claude-skill-antivirus", "tags": ["product"]}, {"name": "VulnCheck Advisory: claude-skill-antivirus Analysis Bypass via Manifest-Only Local Directory Scan", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/claude-skill-antivirus-analysis-bypass-via-manifest-only-local-directory-scan"}], "credits": [{"lang": "en", "value": "nedlir", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}, "adp": [{"references": [{"url": "https://github.com/nedlir/skills-scanner-bypass", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-02T18:02:03.730786Z", "id": "CVE-2026-84810", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-02T18:02:22.959Z"}}]}}

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