CVE-2026-31931
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductOisf Suricata
PublishedApr 2, 2026
First seenApr 2, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- oisf suricata8.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| oisf suricata | 8.0.0 ≤ v < 8.0.4 | 8.0.4 |
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