Description (CNA)
n8n versions before 1.123.73, 2.35.4, and 2.36.2 contain an expression sandbox escape in the $fromAI handler. $fromAI resolved a caller-supplied placeholder name without requiring it to be an own property and admitted reserved keys; against a primitive input value it returned a live host-prototype reference. An attacker with workflow-build privilege can walk the prototype chain to the Function constructor and compile/execute arbitrary code in the main n8n process, leading to remote code execution.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n8n-io / n8n | affected 0 before 1.123.73; unaffected 1.123.73 |
| n8n-io / n8n | affected 0 before 2.36.2; unaffected 2.36.2 |
| n8n-io / n8n | affected 0 before 2.35.4; unaffected 2.35.4 |
CWE
CWE-94
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-9x83-43r8-5hwc
- https://www.vulncheck.com/advisories/n8n-before-1.123.73-remote-code-execution-via-fromai-prototype-leak
ADP enrichment
No English description supplied.
No references supplied.