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GHSA-g3r5-9h93-4j2c
No affected components available
Impact
A TOCTOU race condition in the Git node's clone operation lets an authenticated user bypass its path restrictions by swapping a directory for a symlink after the path is validated but before the clone runs. This plants a crafted repository in the community node directory, which n8n loads as a custom node on the next restart, and since nodes execute JavaScript, this yields arbitrary code execution on the server.
Both self-hosted and cloud instances are affected, where authenticated users can create and run workflows using the Git node.
Patches
Users should upgrade to the patched version once available to remediate the vulnerability.
Workarounds
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
- Restrict n8n instance access to fully trusted users only.
- Disable the Git node by adding
n8n-nodes-base.gitto theNODES_EXCLUDEenvironment variable. - Restrict network egress from the n8n instance to prevent connections to attacker-controlled git repositories.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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