CVE-2026-72764

n8n before 1.123.67 Module Cache Poisoning via Code Node

State: Published
Severity: 5.8 Medium
Published: Aug 11, 2026
Updated: Oct 29, 2026
Reserved: Aug 10, 2026

Description

n8n's JavaScript task runner shared a single module cache across all users' Code-node executions. In affected versions (before 1.123.67, 2.31.5, and 2.32.1), a user able to run a Code node could poison a cached module and thereby alter other users' Code-node executions on the same runner, affecting their confidentiality, integrity, or availability. This is a cross-user isolation break within a single n8n instance and does not constitute a sandbox escape or remote code execution. Only multi-user instances running the JS task runner with built-in or external modules enabled are affected.

Scores

CVSS	Score	Vector	Source
4.0	5.8 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H	VulnCheck

Weaknesses

CWE-668 Exposure of Resource to Wrong Sphere

Affected Products

Product	Versions
n8nn8n-io	before 1.123.67Affected 1.123.67Not affected
n8nn8n-io	2.32.0 to before 2.32.1Affected 2.32.1Not affected
n8nn8n-io	2.0.0-rc.0 to before 2.31.5Affected 2.31.5Not affected

References

GitHub Security Advisory (GHSA-9cmh-xcqm-5hqr)vendor-advisory
VulnCheck Advisory: n8n before 1.123.67 Module Cache Poisoning via Code Nodethird-party-advisory

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