CVE-2012-4505: Libproxy Project Libproxy

High severity, CVSS 10.0. EPSS: 3.2% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the px_pac_reload function in lib/pac.c in libproxy 0.2.x and 0.3.x allows remote servers to have an unspecified impact via a crafted Content-Length size in an HTTP response header for a proxy.pac file request, a different vulnerability than CVE-2012-4504.

Affected products

• Libproxy Project Libproxy: version 0.2.3 only; version 0.3.0 only; version 0.3.1 only

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