CVE-2026-22261 LOW

CVE-2026-22261: Suricata eve/alert: http1 xff handling can lead to denial of service

Vendor Oisf
Product suricata
Weakness CWE-1050
Published January 27, 2026
Last update January 27, 2026
View on NVD All CVEs

CVSS base score

3.7/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.

Key dates

02Disclosure timeline

January 27, 2026 CVE published
January 27, 2026 Record updated