HIGHVulnerability
CVE-2026-85169
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.
Properties
- severity
- HIGH
- score
- 8.8
- cve_id
- CVE-2026-85169
- signal_observed_at
- 2026-09-18T17:46:00+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- published_at
- 2026-09-03T13:06:24.310
- last_modified
- 2026-09-18T14:47:22.890
Related Entities (3)
HAS_WEAKNESS (1)
→[Weakness]Improper Control of Generation of Code ('Code Injection')
DESCRIBED_BY (1)
→[Source]NVD
AFFECTS_PRODUCT (1)
→[Product]
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