CVE-2026-45752

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 certain detection transforms are chained, the decompress transform pipeline could read from an inspection buffer after it had been reallocated and freed. The issue is reached during network traffic processing, but requires a malicious rule as Suricata will crash whatever the traffic. Version 8.0.5 contains a fix. As a workaround, avoid rules that chain `gunzip` or `zlib_deflate` with `max-size` bigger than 4096 after another transform.

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-qmc9-vqq2-8mv3	Mitigation Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/8536	Permissions Required

Configurations

Configuration 1 (hide)

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

History

28 Sep 2026, 18:44

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-qmc9-vqq2-8mv3 -~~	() https://github.com/OISF/suricata/security/advisories/GHSA-qmc9-vqq2-8mv3 - Mitigation, Vendor Advisory
References	~~() https://redmine.openinfosecfoundation.org/issues/8536 -~~	() https://redmine.openinfosecfoundation.org/issues/8536 - Permissions Required

Information

Published : 2026-09-10 21:17

Updated : 2026-09-28 18:44

NVD link : CVE-2026-45752

Mitre link : CVE-2026-45752

CVE.ORG link : CVE-2026-45752

JSON object : View

Products Affected

oisf

suricata

CWE

CWE-416

Use After Free

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