CVE-2026-77080: high-severity vulnerability in n8n-io n8n
n8n before 1.123.69 Arbitrary File Read and Write via Snowflake
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.6%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
n8n-io · n8nRelated CVEs — n8n-io n8n
In the same product, most dangerous first.
CVE-2025-68613CRITICALn8n Vulnerable to Remote Code Execution via Expression InjectionEPSS 99.0%KEVCVE-2026-21858CRITICALn8n Vulnerable to Unauthenticated File Access via Improper Webhook Request HandlingEPSS 78.2%CVE-2025-68668CRITICALn8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code NodeEPSS 13.2%CVE-2026-27577CRITICALn8n: Expression Sandbox Escape Leads to RCEEPSS 10.7%CVE-2026-21877CRITICALn8n is vulnerable to Remote Code Execution via Arbitrary File WriteEPSS 5.4%CVE-2026-25055HIGHn8n Arbitrary File Write on Remote Systems via SSH NodeEPSS 1.9%