SB2026020670 - Time-of-check Time-of-use (TOCTOU) Race Condition in n8n
Published: February 6, 2026
Security Bulletin ID
SB2026020670
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2026-25052)
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to a time-of-check, time-of-use (TOCTOU) race condition in the file access controls. A remote user can obtain critical configuration data and user credentials to gain elevated privileges on the target system.
Remediation
Install update from vendor's website.