CVE-2026-94084 Suricata - Use After Free

Suricata < 8.0.7 contains a use-after-free vulnerability caused by improper handling of Http2ThreadMultiBuf during inspection of transactions by rules using http.response_header with and without a transform, letting attackers cause memory corruption or denial of service, exploit requires crafted rules triggering the condition.

CVSS base score 9.4 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.54% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Published
20 September 2026
Updated
15 October 2026
Weakness
CWE-416

Vendor fix

Upgrade to version 8.0.7 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

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