CVE-2026-77080
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.
- Score
- CVSS 3.1 8.8 High
- Status
- Analyzed - disclosure@vulncheck.com
- Published
- 2026-08-20
- Last modified
- 2026-08-21
- Weaknesses
- CWE-78
Affected products
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
