Time-of-check Time-of-use (TOCTOU) Race Condition Affecting n8n-core package, versions <1.122.12>=2.0.0 <2.4.4
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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- published5 Feb 2026
- disclosed4 Feb 2026
- creditThéo Lelasseux
Introduced: 4 Feb 2026
CVE-2026-25052 (opens in a new tab)How to fix?
Upgrade n8n-core to version 1.122.12, 2.4.4 or higher.
Overview
n8n-core is a Core functionality of n8n
Affected versions of this package are vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition via improper file access controls in the workflow creation or modification process. An attacker can modify sensitive host system files, including configuration data, and obtain user credentials by leveraging permissions to create or modify workflows. This can result in complete account takeover of any user on the instance.
Workaround
This vulnerability can be mitigated by limiting workflow creation and editing permissions to fully trusted users only, and restricting access to nodes that interact with the file system, particularly the "Read/Write Files from Disk" and "Git" nodes.