CVE-2022-1537: Gruntjs Grunt

High severity, CVSS 7.0. EPSS: 0.3% chance of exploitation in the next 30 days.

file.copy operations in GruntJS are vulnerable to a TOCTOU race condition leading to arbitrary file write in GitHub repository gruntjs/grunt prior to 1.5.3. This vulnerability is capable of arbitrary file writes which can lead to local privilege escalation to the GruntJS user if a lower-privileged user has write access to both source and destination directories as the lower-privileged user can create a symlink to the GruntJS user's .bashrc file or replace /etc/shadow file if the GruntJS user is root.

Affected products

• Gruntjs Grunt: before 1.5.3 (fixed in 1.5.3)

Published 2022-05-10. Last modified 2026-06-17.