What is CVE-2026-31932?

CVE-2026-31932 is a high-severity vulnerability in Oisf Suricata, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-04-02.

How severe is CVE-2026-31932?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Oisf Suricata

CVE-2026-31932

Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, inefficiency in KRB5 buffering can lead to performance degradation. This issue has been patched in versions 7.0.15 and 8.0.4.

EPSS: 0.001 (17.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Oisf Suricata — versions < 7.0.15, >= 8.0.0, < 8.0.4

Weakness classification (CWE)

CWE-407 — Inefficient Algorithmic Complexity

References

https://github.com/OISF/suricata/security/advisories/GHSA-rp9m-jcpw-hggr (x_refsource_CONFIRM)
https://redmine.openinfosecfoundation.org/issues/8305 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-31932?: CVE-2026-31932 is a high-severity vulnerability in Oisf Suricata, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-04-02.
How severe is CVE-2026-31932?: High severity. CVSS v3 base score is 7.5 out of 10.