CVE-2026-31931
Suricata tls: null dereference in tls.alpn rule keyword
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-476 |
| Vendor | oisf |
| Product | suricata |
| Published | Apr 2, 2026 |
| Last Updated | Apr 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
OISF / suricata
>= 8.0.0, < 8.0.4