CVE-2023-25305: Polymc

High severity, CVSS 7.1. EPSS: 0.6% chance of exploitation in the next 30 days.

PolyMC Launcher <= 1.4.3 is vulnerable to Directory Traversal. A mrpack file can be maliciously crafted to create arbitrary files outside of the installation directory.

Affected products

• Polymc Polymc: before 5.0 (fixed in 5.0)

Published 2023-04-04. Last modified 2026-06-17.