CVE-2026-22263: Oisf Suricata

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, inefficiency in http1 headers parsing can lead to slowdown over multiple packets. Version 8.0.3 patches the issue. No known workarounds are available.

Affected products

• Oisf Suricata: from 8.0.0, before 8.0.3 (fixed in 8.0.3)

Published 2026-01-27. Last modified 2026-06-17.