CVE-2013-1912: Haproxy

Medium severity, CVSS 5.1. EPSS: 5.6% chance of exploitation in the next 30 days.

Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP inspection rules, and running with rewrite rules that appends to requests, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted pipelined HTTP requests that prevent request realignment from occurring.

Affected products

• Haproxy Haproxy: version 1.4 only; version 1.4.20 only; version 1.4.22 only; version 1.5 only

Published 2013-04-10. Last modified 2026-06-16.