Vulnerability Description
Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, use of the "tls.alpn" rule keyword can cause Suricata to crash with a NULL dereference. This issue has been patched in version 8.0.4.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Oisf | Suricata | >= 8.0.0, < 8.0.4 |
Related Weaknesses (CWE)
References
- https://github.com/OISF/suricata/security/advisories/GHSA-gr22-4784-xvw3Vendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8294Issue TrackingPermissions Required
FAQ
What is CVE-2026-31931?
CVE-2026-31931 is a vulnerability with a CVSS score of 7.5 (HIGH). Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, use of the "tls.alpn" rule keyword can cause Suricata to crash with a NULL dereference. This issue has been p...
How severe is CVE-2026-31931?
CVE-2026-31931 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31931?
Check the references section above for vendor advisories and patch information. Affected products include: Oisf Suricata.