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. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (28.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
- Oisf Suricata — versions < 7.0.14, >= 8.0.0, < 8.0.3
Weakness classification (CWE)
References
- github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf (Vendor Advisory)
- github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44 (Patch)
- github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667 (Patch)
- redmine.openinfosecfoundation.org/issues/8156 (Permissions Required)
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.