CVE-2026-45770

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, a Lua rule that registers too many flow variables can corrupt Lua detection state and may bypass Suricata's restricted Lua sandbox. This requires an affected Lua script/rule to be loaded. Excessive flow variables being registered may also cause Suricata to crash. Version 8.0.5 contains a fix. As a workaround, disable `security.lua.allow-rules` unless Lua rules are required.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315	Release Notes Vendor Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-653j-cc95-vj4c	Third Party Advisory
https://redmine.openinfosecfoundation.org/issues/8556	Permissions Required

Configurations

Configuration 1 (hide)

cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*

History

16 Sep 2026, 18:28

Type	Values Removed	Values Added
First Time		Oisf Oisf suricata
References	~~() https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 -~~	() https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 - Release Notes, Vendor Advisory
References	~~() https://github.com/OISF/suricata/security/advisories/GHSA-653j-cc95-vj4c -~~	() https://github.com/OISF/suricata/security/advisories/GHSA-653j-cc95-vj4c - Third Party Advisory
References	~~() https://redmine.openinfosecfoundation.org/issues/8556 -~~	() https://redmine.openinfosecfoundation.org/issues/8556 - Permissions Required
CPE		cpe:2.3:a:oisf:suricata::::::::

Information

Published : 2026-09-10 22:16

Updated : 2026-09-16 18:28

NVD link : CVE-2026-45770

Mitre link : CVE-2026-45770

CVE.ORG link : CVE-2026-45770

JSON object : View

Products Affected

oisf

suricata

CWE

CWE-693

Protection Mechanism Failure

CWE-787

Out-of-bounds Write

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