Improper Input Validation
A flaw was found in Moodle to to to unsupported versions. A remote code execution risk when restoring backup files was identified.
All versions starting from 3.9.0 up to 3.9.10, all versions starting from 3.10.0 up to 3.10.7, all versions starting from 3.11.0 up to 3.11.3
Upgrade to versions 3.9.11, 3.10.8, 3.11.4 or above.