CVE-2026-77080 n8n before 1.123.69 Arbitrary File Read and Write via Snowflake
Authenticated users with Snowflake credentials can read or write arbitrary files on the n8n host via the Snowflake node.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-77080?
CVE-2026-77080 is a high-severity path traversal vulnerability in N8n N8n, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-77080?
It affects 1 product.
Products include N8n N8n.
How do I fix CVE-2026-77080?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-77080 being exploited?
There is no known exploitation of CVE-2026-77080 in the wild and no public exploit code.
Other vulnerabilities in N8n N8n
- CVE-2025-68613 n8n Improper Control of Dynamically-Managed Code Resources
- CVE-2026-21877 n8n is vulnerable to Remote Code Execution via Arbitrary File Write
- CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling
- CVE-2026-1470 n8n Unsafe Workflow Expression Evaluation Allows Remote Code Execution
- CVE-2025-68668 n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node
Sources
Also known as GHSA-f4h2-4c4x-g885, GHSA-r4j2-j3wm-q689, MINI-w4f4-5wcp-qmfq.