CVE-2026-21858 | THREATINT

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.

PUBLISHED Reserved 2026-01-05 | Published 2026-01-07 | Updated 2026-01-12 | Assigner GitHub_M

CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Problem types

CWE-20: Improper Input Validation

Product status

>= 1.65.0, < 1.121.0

affected

References

github.com/...io/n8n/security/advisories/GHSA-v4pr-fm98-w9pg

www.cyera.com/...remote-code-execution-in-n8n-cve-2026-21858

cve.org (CVE-2026-21858)

nvd.nist.gov (CVE-2026-21858)

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