CVE-2026-45764 Suricata - Denial of Service

Suricata < 7.0.16 and < 8.0.5 contain a denial of service caused by type confusion during HTTP/2 protocol processing, letting attackers crash the system remotely, exploit requires crafted HTTP/2 traffic.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.63% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Published
10 September 2026
Updated
15 October 2026
Weakness
CWE-843

Vendor fix

Upgrade to versions 7.0.16, 8.0.5 or later. Alternatively, disable HTTP/2 parsing if not required.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs