CVE-2026-77080

n8n before 1.123.69 Arbitrary File Read and Write via Snowflake

State: Published
Severity: 8.7 High
Published: Aug 20, 2026
Updated: Aug 21, 2026
Reserved: Aug 20, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	VulnCheck

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
n8nn8n-io	before 1.123.69Affected 1.123.69Not affected
n8nn8n-io	2.34.0 to before 2.34.1Affected 2.34.1Not affected
n8nn8n-io	2.0.0 to before 2.33.4Affected 2.33.4Not affected

References

GitHub Security Advisory (GHSA-r4j2-j3wm-q689)vendor-advisory
VulnCheck Advisory: n8n before 1.123.69 Arbitrary File Read and Write via Snowflakethird-party-advisory

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