What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-20 · updated 2026-09-01
• Weakness: CWE-78

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.

Affected products

• n8n-io n8n: before 1.123.69; from 2.0.0 before 2.33.4; 2.34.0 — fixed in 1.123.69, 2.33.4

How to fix

Upgrade to a fixed version: n8n-io n8n 1.123.69, 2.33.4. Check the vendor advisory for mitigations.

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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