CVE-2026-21858: exploitation status and patch state
CVE-2026-21858 · CVSS 10.0 CRITICAL · EPSS 73%
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.
Is CVE-2026-21858 exploited?
Not in the CISA KEV catalog.
EPSS puts exploitation in the next 30 days at 73%.
Public exploit code: none found in monitored sources.
Public detection rules exist.
Which products and versions are affected?
No affected package list recorded here yet.
Is there a patch?
No patch identifier recorded here yet.
What PlainSec published about CVE-2026-21858
PlainSec has not published a story about this CVE.