CVE-2026-45763

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, when Lua rule execution is enabled, the Lua sandbox memory limit was not consistently enforced for new allocations. Certain Lua allocation patterns could exceed `security.lua.max-bytes` without triggering the intended memory limit, making the configured sandbox limit unreliable. This requires Lua rules to be enabled and an affected Lua script/rule to be loaded. Version 8.0.5 contains a fix. As a workaround, disable `security.lua.allow-rules` unless Lua rules are required.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

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-9h43-frr8-xx6m	Mitigation Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/8507	Permissions Required

Configurations

Configuration 1 (hide)

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

History

28 Sep 2026, 18:43

Type	Values Removed	Values Added
First Time		Oisf suricata Oisf
CPE		cpe:2.3:a: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-9h43-frr8-xx6m -~~	() https://github.com/OISF/suricata/security/advisories/GHSA-9h43-frr8-xx6m - Mitigation, Vendor Advisory
References	~~() https://redmine.openinfosecfoundation.org/issues/8507 -~~	() https://redmine.openinfosecfoundation.org/issues/8507 - Permissions Required

Information

Published : 2026-09-10 14:17

Updated : 2026-09-28 18:43

NVD link : CVE-2026-45763

Mitre link : CVE-2026-45763

CVE.ORG link : CVE-2026-45763

JSON object : View

Products Affected

oisf

suricata

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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