Critical severity9.9OSV Advisory· Published Jan 8, 2026· Updated Jun 17, 2026

CVE-2026-21877

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
n8nnpm	>= 0.123.0, < 1.121.3	1.121.3

Affected products

N8n Io/N8nOSV
Range: [email protected], [email protected], [email protected], …
ghsa-coords
pkg:npm/n8n
Range: >= 0.123.0, < 1.121.3

Patches

Vulnerability mechanics

References

github.com/n8n-io/n8n/commit/f4b009d00d1f4ba9359b8e8f1c071e3d910a55f6nvdPatch
github.com/advisories/GHSA-v364-rw7m-3263ghsaADVISORY
github.com/n8n-io/n8n/security/advisories/GHSA-v364-rw7m-3263nvdVendor AdvisoryWEB

News mentions

No linked articles in our index yet.

cvss	0.643
epss	0.004
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000