CVE-2026-0863

criticalpriority · track · 43EPSS 0.093 · 95 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

9.29% (95th) EPSS

CVSS 9.9 · critical

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.5–9.9

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.1 · impact 6

v3.18.5highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.5highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · reefs@jfrog.comexploitability 1.8 · impact 6

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-95US

affected products (4)

Products and version ranges known to be affected.

n8n n8nall versionscert_bundDEcpe:/a:n8n:n8n:-
n8n n8n≤ 1.123.14nvdUScpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
n8n n8n2.0.0 → 2.3.5nvdUScpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
n8n n8n2.4.0 → 2.4.2nvdUScpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0144n8n: Schwachstelle ermöglicht CodeausführungDeutsch2026-01-18csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in n8n ausnutzen, um beliebigen Programmcode auszuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-01-18modified 2026-06-17

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+10438 more

references (9)

External citations — patches, advisories, analysis.

scry

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