Description
n8n before 1.123.64, 2.29.8, and 2.30.1 contains a TOCTOU race condition in the Git node's clone operation that allows authenticated users to bypass path restrictions by swapping a directory for a symlink after the path is validated but before the clone runs. This lets an attacker plant a crafted repository in the community node directory, which n8n loads as a custom node on the next restart, executing arbitrary JavaScript on the server. Both self-hosted and cloud instances are affected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | < 1.123.64, 2.30.0 – < 2.30.1, 2.0.0-rc.0 – < 2.29.8 | 1.123.64 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | n8n | < 1.123.64 | 1.123.64 | GHSA-g3r5-9h93-4j2c |
| npm | n8n | >= 2.30.0, < 2.30.1 | 2.30.1 | GHSA-g3r5-9h93-4j2c |
| npm | n8n | >= 2.0.0-rc.0, < 2.29.8 | 2.29.8 | GHSA-g3r5-9h93-4j2c |
References
- GitHub Security Advisory (GHSA-g3r5-9h93-4j2c) vendor-advisory
- VulnCheck Advisory: n8n before 1.123.64 Remote Code Execution via Git Clone third-party-advisory