CVE-2026-21877

CRITICAL

9.9

Description

n8n is an open source workflow automation platform. In versions 0.121.2 and below, an authenticated attacker may be able to execute malicious code using the n8n service. This could result in full compromise and can impact both self-hosted and n8n Cloud instances. This issue is fixed in version 1.121.3. Administrators can reduce exposure by disabling the Git node and limiting access for untrusted users, but upgrading to the latest version is recommended.

Details CVE

Score CVSS v3.19.9

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie1/8/2026

Derniere modification1/20/2026

Sourcenvd

Observations honeypot0

Produits affectes

n8n:n8n

Faiblesses (CWE)

CWE-94CWE-434

References

https://github.com/n8n-io/n8n/commit/f4b009d00d1f4ba9359b8e8f1c071e3d910a55f6(security-advisories@github.com)

https://github.com/n8n-io/n8n/security/advisories/GHSA-v364-rw7m-3263(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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