CVE-2026-46387 Suricata - Denial of Service

Suricata < 7.0.16 and < 8.0.5 contain a denial of service caused by unbounded HTTP/2 decompression buffer growth, letting remote attackers exhaust memory via crafted compressed HTTP/2 DATA payloads, exploit requires network access.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.85% 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
10 September 2026
Updated
15 October 2026
Weakness
CWE-409

Vendor fix

Upgrade to versions 7.0.16 or 8.0.5 or later. Alternatively, disable HTTP/2 as a workaround.

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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