EUVD-2026-18245CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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Description
Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, flooding of craft HTTP2 continuation frames can lead to memory exhaustion, usually resulting in the Suricata process being shut down by the operating system. This issue has been patched in versions 7.0.15 and 8.0.4.
Analysis
Memory exhaustion in Suricata network IDS/IPS via HTTP/2 CONTINUATION frame flooding allows remote unauthenticated attackers to trigger denial of service, typically forcing operating system termination of the Suricata process. Affects all versions prior to 7.0.15 and 8.0.4. …
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Remediation
Within 24 hours: Verify current Suricata versions in production (check `suricata --version`); confirm which systems run versions prior to 7.0.15 or 8.0.4. Within 7 days: Implement interim HTTP/2 frame-size filtering at upstream proxies or firewalls to reject oversized CONTINUATION frame sequences; document baseline memory consumption for monitoring anomalies. …
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