CVE-2026-84810

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-02. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
6.5
EG Score
6.5(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 2, 2026

Advisory Details (5)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic

claude-skill-antivirus Analysis Bypass via Manifest-Only Local Directory Scan | Advisories | VulnCheck

https://www.vulncheck.com/advisories/claude-skill-antivirus-analysis-bypass-via-manifest-only-local-directory-scan
generic

GitHub - claude-world/claude-skill-antivirus: Security scanner for Claude Code Skills — 9 engines detect malicious patterns, data exfiltration, dangerous ops across 71K+ skills · GitHub

https://github.com/claude-world/claude-skill-antivirus
generic

claude-skill-antivirus/src/scanner/index.js at v2.1.3 · claude-world/claude-skill-antivirus · GitHub

https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/scanner/index.js
generic

claude-skill-antivirus/src/utils/downloader.js at v2.1.3 · claude-world/claude-skill-antivirus · GitHub

https://github.com/claude-world/claude-skill-antivirus/blob/v2.1.3/src/utils/downloader.js
generic

Only SKILL.md analyzed -- all executable code ignored (v2.1.3) · Issue #33 · claude-world/claude-skill-antivirus · GitHub

https://github.com/claude-world/claude-skill-antivirus/issues/33

Vendor Advisories for CVE-2026-84810(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 18:06 UTCEG score recompute
  2. 2026-09-19 18:06 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 16:43 UTCEG score recompute
  5. 2026-09-18 16:43 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 15:21 UTCEG score recompute
  8. 2026-09-17 15:21 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 13:59 UTCEG score recompute
  11. 2026-09-16 13:59 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 12:03 UTCEG score recompute
  14. 2026-09-15 12:02 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-14 10:40 UTCEG score recompute
  18. 2026-09-14 10:40 UTCGHSA enrichment
  19. 2026-09-13 09:18 UTCEG score recompute
  20. 2026-09-13 09:18 UTCGHSA enrichment
  21. 2026-09-12 07:57 UTCEG score recompute
  22. 2026-09-12 07:57 UTCGHSA enrichment
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 06:35 UTCEG score recompute
Show 23 more
  1. 2026-09-11 06:35 UTCGHSA enrichment
  2. 2026-09-10 05:13 UTCGHSA enrichment
  3. 2026-09-09 03:51 UTCEG score recompute
  4. 2026-09-09 03:51 UTCGHSA enrichment
  5. 2026-09-08 22:01 UTCEPSS rescore
  6. 2026-09-08 02:30 UTCEG score recompute
  7. 2026-09-08 02:30 UTCGHSA enrichment
  8. 2026-09-07 01:07 UTCEG score recompute
  9. 2026-09-07 01:07 UTCGHSA enrichment
  10. 2026-09-06 13:48 UTCEPSS rescore
  11. 2026-09-05 23:44 UTCEG score recompute
  12. 2026-09-05 23:44 UTCGHSA enrichment
  13. 2026-09-05 15:31 UTCEPSS rescore
  14. 2026-09-04 22:20 UTCEG score recompute
  15. 2026-09-04 22:20 UTCGHSA enrichment
  16. 2026-09-04 05:07 UTCEPSS rescore
  17. 2026-09-03 20:55 UTCGHSA enrichment
  18. 2026-09-02 19:31 UTCEG score recompute
  19. 2026-09-02 19:31 UTCGHSA enrichment
  20. 2026-09-02 18:30 UTCEG score recompute
  21. 2026-09-02 17:35 UTCEG score recompute
  22. 2026-09-02 17:03 UTCEG score recompute
  23. 2026-09-02 17:01 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-84810?
CVE-2026-84810 is a medium vulnerability published on September 2, 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…
When was CVE-2026-84810 disclosed?
CVE-2026-84810 was first published in the National Vulnerability Database on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84810 actively exploited?
CVE-2026-84810 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 81.6% of all scored CVEs.
What is the CVSS score of CVE-2026-84810?
CVE-2026-84810 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-84810?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84810, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-84810

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