CVE-2026-21858

CRITICAL

10.0

Description

n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker, resulting in exposure of sensitive information stored on the system and may enable further compromise depending on deployment configuration and workflow usage. This issue is fixed in version 1.121.0.

Details CVE

Score CVSS v3.110.0

SeveriteCRITICAL

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/8/2026

Derniere modification1/16/2026

Sourcenvd

Observations honeypot0

Produits affectes

n8n:n8n

Faiblesses (CWE)

CWE-20

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-v4pr-fm98-w9pg(security-advisories@github.com)

https://www.cyera.com/research-labs/ni8mare-unauthenticated-remote-code-execution-in-n8n-cve-2026-21858(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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