# CVE-2026-84810: claude-skill-antivirus Analysis Bypass via Manifest-Only Local Directory Scan

> Attackers can distribute malicious skills that bypass antivirus scanning by hiding payloads in non-manifest files, receiving a safe verdict.

- **Severity:** High 7.1 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-gvgj-r6pg-m42w

## What is CVE-2026-84810?

CVE-2026-84810 is a high-severity vulnerability in claude-world claude-skill-antivirus, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

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.

Weakness: CWE-693 (Protection Mechanism Failure)

## Which versions are affected by CVE-2026-84810?


## How do I fix CVE-2026-84810?

No fix has been published for CVE-2026-84810 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-84810 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84810 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-84810 and fix it if it is affected.

What it is: CVE-2026-84810 is a high-severity vulnerability in claude-world claude-skill-antivirus, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84810 exists.

Affected product: claude-world claude-skill-antivirus. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-84810/ (Markdown: https://insights.sbomify.com/CVE-2026-84810/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-84810
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84810
- OSV: https://osv.dev/vulnerability/CVE-2026-84810

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-84810/
Summaries are generated and may contain mistakes; the official description above is the record.