CVE-2012-4504: Libproxy Project Libproxy

High severity, CVSS 10.0. EPSS: 3.5% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the url::get_pac function in url.cpp in libproxy 0.4.x before 0.4.9 allows remote servers to have an unspecified impact via a large proxy.pac file.

Affected products

• Libproxy Project Libproxy: version 0.4.0 only; version 0.4.1 only; version 0.4.2 only; version 0.4.3 only; version 0.4.5 only; version 0.4.6 only; …

Published 2012-11-11. Last modified 2026-06-16.