CVE-2026-45764CWE-843

CVE-2026-45764

Critical · published September 11, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
49.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00633 · 49.7th percentile
Weakness
CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')
Published
2026-09-11T02:16Z
Affected products (2)
ProductVersionsFixed in
oisf/suricata≥ 7.0.0, < 7.0.167.0.16
oisf/suricata≥ 8.0.0, < 8.0.58.0.5
References (3)
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 · [email protected]https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr · [email protected]https://redmine.openinfosecfoundation.org/issues/8492 · [email protected]
EPSS history
Timeline
  • 12 SEP 03:21Z
    EPSS moved — → 0%
    epss
  • 10 SEP 21:14Z
    Suricata http2: protocol-change type confusion can lead to denial of service
    cvelistv5