Vulnerability in Oisf Suricata
CVE-2026-57222
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, crafted IPv4 and IPv6 address pairs can collide in the IPPair hash because src/ippair.c did not compare the IP address family before reusing IPPair-backed state. This can apply state from one IP family to another for xbits track ip_pair, FTP data expectations, and, on the 7.0 release line, thresholding, detection_filter, and rate_filter rules using track by_both, causing incorrect detection state. This issue is fixed in versions 8.0.6 and 7.0.17.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (38.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Oisf Suricata — versions < 7.0.17, >= 8.0.0, < 8.0.6
Weakness classification (CWE)
References
- github.com/OISF/suricata/commit/4a728464e6eb9e273bb02e3df0c28929b28db71d (Patch)
- github.com/OISF/suricata/commit/9d788575c5d22a34eeed50d56557ed12b05e0aec (Patch)
- github.com/OISF/suricata/commit/c92e270c4a795c52bce610aa1ce9ebaf065c49e6 (Patch)
- github.com/OISF/suricata/releases/tag/suricata-7.0.17 (Release Notes)
- github.com/OISF/suricata/releases/tag/suricata-8.0.6 (Release Notes)
- github.com/OISF/suricata/security/advisories/GHSA-2r8x-23fw-hgcg (Vendor Advisory)
- redmine.openinfosecfoundation.org/issues/8559 (Permissions Required)
Frequently asked questions
- What is CVE-2026-57222?
- CVE-2026-57222 is a medium-severity vulnerability in Oisf Suricata, classified under Incorrect Comparison. CVSS score: 5.3/10. Published 2026-09-18.
- How severe is CVE-2026-57222?
- Medium severity. CVSS v3 base score is 5.3 out of 10.