High severity · published Aug 20, 2026
CVE-2026-77080
n8n before 1.123.69 Arbitrary File Read and Write via Snowflake
8.8
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n-io
before 1.123.69; 2.34.0 before 2.34.1; 2.0.0 before 2.33.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77080
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77080
Mitigation
https://github.com/n8n-io/n8n/security/advisories/GHSA-r4j2-j3wm-q689
Third Party Advisory
https://www.vulncheck.com/advisories/n8n-before-arbitrary-file-read-and-write-via-snowflake
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