CVE-2026-45764
Suricata http2: protocol-change type confusion can lead to denial of service
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata to crash, resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP/2 parsing if it is not required.
| CWE | CWE-843 |
| Vendor | oisf |
| Product | suricata |
| Published | Sep 10, 2026 |
| Last Updated | Sep 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for oisf suricata
Be the first to know when new critical vulnerabilities affecting oisf suricata are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
OISF / suricata
>= 8.0.0, < 8.0.5 < 7.0.16