CVE-2026-31935 PUBLISHED

Suricata http2: unbounded resource consumption

Assigner: GitHub_M
Reserved: 10.03.2026 Published: 02.04.2026 Updated: 02.04.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	OISF
Product	suricata
Versions	Version < 7.0.15 is affected Version >= 8.0.0, < 8.0.4 is affected

References

https://github.com/OISF/suricata/security/advisories/GHSA-vxrp-5pg7-7v4x
https://redmine.openinfosecfoundation.org/issues/8289

Problem Types

CWE-400: Uncontrolled Resource Consumption CWE
CWE-770: Allocation of Resources Without Limits or Throttling CWE