CVE-2024-23839: Fedoraproject Fedora

High severity, CVSS 8.1. EPSS: 0.8% 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 7.0.3, specially crafted traffic can cause a heap use after free if the ruleset uses the http.request_header or http.response_header keyword. The vulnerability has been patched in 7.0.3. To work around the vulnerability, avoid the http.request_header and http.response_header keywords.

Affected products

• Fedoraproject Fedora: version 38 only; version 39 only
• Oisf Suricata: from 7.0.0, before 7.0.3 (fixed in 7.0.3)

Published 2024-02-26. Last modified 2026-06-17.