CVE-2026-31931

high Red Hat
CVSS v3 Base Score
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: April 2, 2026 (42 days ago)
Last Modified: April 2, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in Suricata, a network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring (NSM) engine. An attacker could trigger a null dereference by using the "tls.alpn" rule keyword, causing the Suricata engine to crash. This vulnerability leads to a Denial of Service (DoS).

CWE

CWE-476

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com 🔗 redmine.openinfosecfoundation.org