---
id: CVE-2026-63452
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. From 8.0.0 until 8.0.6, the HTTP/1
  parser limits decompression work per transaction but does not limit how many
  small b…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-409
vendor: OISF
product: suricata
affected:
  - 'suricata >= 8.0.0, < 8.0.6'
published: '2026-09-18'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T19:17:08.810'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63452'
references:
  - url: >-
      https://github.com/OISF/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5f
    label: security-advisories@github.com
  - url: >-
      https://github.com/OISF/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88
    label: security-advisories@github.com
  - url: 'https://github.com/OISF/suricata/releases/tag/suricata-8.0.6'
    label: security-advisories@github.com
  - url: 'https://github.com/OISF/suricata/security/advisories/GHSA-j9cx-w9xm-5x84'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/8694'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
epss: 0.00361
epssPercentile: 0.29823
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-21T18:19:39.620230Z'
ingestedAt: '2026-09-18T20:51:25.797Z'
---

## Overview

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the HTTP/1 parser limits decompression work per transaction but does not limit how many small brotli compression bombs a single flow can submit. With response-body-decompress-layer-limit enabled, repeated compressed responses make the decompression paths in rust/htp perform expensive work for every transaction, degrading packet processing and potentially causing loss of monitoring visibility or denial of service. This issue is fixed in version 8.0.6.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.