CVE-2026-22261

LOW3.7

Suricata eve/alert: http1 xff handling can lead to denial of service

Published Jan 27, 2026

Modified 1 months ago

Details

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.

References

WEB

https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44

WEB

https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667

WEB

https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf

WEB

https://redmine.openinfosecfoundation.org/issues/8156

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-22261

CVSS Analysis