---
id: CVE-2026-45752
title: >-
  Suricata is a network Intrusion Detection System, Intrusion Prevention System
  and Network Security Monitoring engine
summary: >-
  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
  tra…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-416
vendor: oisf
product: suricata
affected:
  - 'suricata >= 8.0.0, < 8.0.5'
patched:
  - suricata 8.0.5
published: '2026-09-10'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T18:44:43.687'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45752'
references:
  - url: 'https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315'
    label: security-advisories@github.com
  - url: 'https://github.com/OISF/suricata/security/advisories/GHSA-qmc9-vqq2-8mv3'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/8536'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-11T17:44:38.906745Z'
ingestedAt: '2026-09-14T00:35:28.535Z'
epss: 0.00515
epssPercentile: 0.43697
---

## Overview

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.

## Affected

- `suricata >= 8.0.0, < 8.0.5`

## Remediation

Upgrade past the affected range:

- `suricata 8.0.5`