VulnerabilityAnalyzed
CVE-2026-31931
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.
HIGH 7.5EPSS 0.35%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.35% probability · 28th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- oisf/suricata
- Source
- security-advisories@github.com
References
- https://github.com/OISF/suricata/security/advisories/GHSA-gr22-4784-xvw3Vendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8294Issue Tracking, Permissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.