CVE-2026-63446 Suricata - Denial of Service

Suricata 8.0.0 to 8.0.6 contains a denial of service caused by improper transaction inspection marking in AppLayerParserSetTransactionInspectId, letting attackers cause CPU and memory exhaustion by triggering repeated rescans, exploit requires network traffic triggering pass rules.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.68% 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-401

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