CVE-2026-63452 Suricata - Denial of Service

Suricata 8.0.0 to 8.0.6 contains a denial of service caused by unbounded processing of multiple small Brotli compression bombs in HTTP/1 parser, letting attackers degrade packet processing, exploit requires sending repeated compressed responses in a single flow.

CVSS base score 7.5 /10
High
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:N/A:H
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-400

Vendor fix

Upgrade to version 8.0.6 or later.

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