CVE-2026-0863
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host.
Using string formatting and exception handling, an attacker may bypass n8n's python-task-executor sandbox restrictions and run arbitrary unrestricted Python code in the underlying operating system. The vulnerability can be exploited via the Code block by an authenticated user with basic permissions and can lead to a full n8n instance takeover on instances operating under "Internal" execution mode. If the instance is operating under the "External" execution mode (ex. n8n's official Docker image) - arbitrary code execution occurs inside a Sidecar container and not the main node, which significantly reduces the vulnerability impact.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
n8n
- Vendor
- Unknown
- Product
- Unknown
- Platforms
- Unknown
- Default status
Unknown- Package
- n8n
- Package collection
- https://www.npmjs.com
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.4.0 | affected | semver | 2.4.2 | Unavailable | None listed |
| 0 | affected | semver | 1.123.14 | Unavailable | None listed |
| 2.0.0 | affected | semver | 2.3.5 | Unavailable | None listed |