CVE-2026-31931

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 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-26)

CWE

CWE-476

Published

2026-04-02

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• oisf:suricata

References

• https://github.com/OISF/suricata/security/advisories/GHSA-gr22-4784-xvw3
• https://redmine.openinfosecfoundation.org/issues/8294

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