CVE-2024-32663: Oisf Suricata

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, a small amount of HTTP/2 traffic can lead to Suricata using a large amount of memory. The issue has been addressed in Suricata 7.0.5 and 6.0.19. Workarounds include disabling the HTTP/2 parser and reducing `app-layer.protocols.http2.max-table-size` value (default is 65536).

Affected products

• Oisf Suricata: from 6.0.0, before 6.0.19 (fixed in 6.0.19); from 7.0.0, before 7.0.5 (fixed in 7.0.5)

Published 2024-05-07. Last modified 2026-06-17.