Is CVE-2026-84810 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-84810 being exploited in the wild.

How severe is CVE-2026-84810?

Medium severity, with a CVSS score of 6.5, published 2 September 2026.

Which products and versions are affected?

Anthropic Claude-Skill-Antivirus before 2.1.3 (or affected version in 2.1.3).

Is there a fix for CVE-2026-84810?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-84810 attacked?

It is attacked over the network.

Am I affected by CVE-2026-84810?

Check whether you run Anthropic Claude-Skill-Antivirus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-84810: Anthropic claude-skill-antivirus incomplete file analysis in skill scanning

CVE-2026-84810 · Severity: medium · CVSS 6.5 · Published 2026-09-02

Claude Skill Antivirus is a security scanner that analyzes third-party AI skills for malicious code. The scanner fails to examine executable content (Python source code, compiled bytecode, and other scripts) stored in skill directories, only reading the manifest file while ignoring potentially dangerous payloads. Attackers can distribute malicious skills that receive a "SAFE" verdict and high trust scores despite containing unanalyzed executable code that could run arbitrary commands.

Vendors: Anthropic.

Quick answers

Is CVE-2026-84810 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-84810 being exploited in the wild.
How severe is CVE-2026-84810?: Medium severity, with a CVSS score of 6.5, published 2 September 2026.
Which products and versions are affected?: Anthropic Claude-Skill-Antivirus before 2.1.3 (or affected version in 2.1.3).
Is there a fix for CVE-2026-84810?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-84810 attacked?: It is attacked over the network.
Am I affected by CVE-2026-84810?: Check whether you run Anthropic Claude-Skill-Antivirus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a logic flaw in the skill scanning engine where the scanner reads only the SKILL.md manifest file during local directory scans while completely ignoring Python source files, compiled bytecode (.pyc), and other executable artifacts in the scripts directory. This creates a false sense of security: a skill containing malicious Python code in non-manifest files receives a SAFE verdict with a 100/100 trust score despite the actual executable payload never being analyzed. The issue affects the scanning logic at the directory traversal level, where the scanner fails to enumerate and process all executable files. No patch status is currently indicated in the advisory.

Affected products

Anthropic claude-skill-antivirus before 2.1.3 (or affected version in 2.1.3)

Timeline

2026-09-02: disclosed

References

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