CVE-2026-31933 HIGH

CVE-2026-31933: Suricata stream: quadratic complexity in stream inspection

Vendor Oisf
Product suricata
Weakness CWE-407
Published April 2, 2026
Last update April 3, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting performance in IDS mode. This issue has been patched in versions 7.0.15 and 8.0.4.

Key dates

02Disclosure timeline

April 2, 2026 CVE published
April 3, 2026 Record updated