What is CVE-2026-22261?

CVE-2026-22261 is a low-severity vulnerability in Oisf Suricata, classified under CWE-1050. CVSS score: 3.7/10. Published 2026-01-27.

How severe is CVE-2026-22261?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Oisf Suricata

CVE-2026-22261

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…

EPSS: 0.001 (27.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Oisf Suricata — versions < 7.0.14, >= 8.0.0, < 8.0.3

Weakness classification (CWE)

CWE-1050

References

https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf (x_refsource_CONFIRM)
https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44 (x_refsource_MISC)
https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667 (x_refsource_MISC)
https://redmine.openinfosecfoundation.org/issues/8156 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-22261?: CVE-2026-22261 is a low-severity vulnerability in Oisf Suricata, classified under CWE-1050. CVSS score: 3.7/10. Published 2026-01-27.
How severe is CVE-2026-22261?: Low severity. CVSS v3 base score is 3.7 out of 10.