Arbitrary Code Injection Affecting n8n-core package, versions <1.122.4>=2.0.0 <2.1.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Feb 2026
- disclosed25 Feb 2026
- creditFatih Çelik
Introduced: 25 Feb 2026
CVE-2026-27498 (opens in a new tab)How to fix?
Upgrade n8n-core to version 1.122.4, 2.1.2 or higher.
Overview
n8n-core is a Core functionality of n8n
Affected versions of this package are vulnerable to Arbitrary Code Injection via the readWriteFile node in combination with git operations. An attacker can execute arbitrary commands on the host system by writing to specific configuration files and triggering a git operation. This is only exploitable if the attacker has authenticated access and permission to create or modify workflows.
Workaround
This vulnerability can be mitigated by limiting workflow creation and editing permissions to fully trusted users only, and by disabling the readWriteFile node through the NODES_EXCLUDE environment variable.