Inefficiency in HTTP Headers Parsing in Suricata Network Security Engine

CVE-2026-22263

What is CVE-2026-22263?

Suricata, a versatile network intrusion detection and prevention system, is affected by a performance issue related to HTTP headers parsing. Versions 8.0.0 through 8.0.2 exhibit inefficiencies that can lead to significant slowdowns when processing multiple packets. This issue has been addressed in version 8.0.3, which mitigates the performance degradation. Users of the affected versions are advised to upgrade to ensure optimal performance and security. Currently, no workarounds are available for this vulnerability.

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