CVE-2024-45506: Haproxy

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 allows a remote denial of service for HTTP/2 zero-copy forwarding (h2_send loop) under a certain set of conditions, as exploited in the wild in 2024.

Affected products

• Haproxy Haproxy: from 2.9.0, before 2.9.10 (fixed in 2.9.10); from 3.0.0, before 3.0.4 (fixed in 3.0.4); version 3.1 only

Published 2024-09-04. Last modified 2026-06-17.