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.

CVE Details

CVSS v3.1 Score10.0

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/8/2026

Last Modified1/16/2026

Sourcenvd

Honeypot Sightings0

Affected Products

n8n:n8n

Weaknesses (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)

IOC Correlations

No correlations recorded

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