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VULNERABILITIES

CVE-2026-46387 Details

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's HTTP/2 decompression path could grow the decompressed response-body buffer without an effective upper bound. A crafted HTTP/2 DATA payload using a high compression ratio, such as gzip, deflate, or brotli compressed data, could cause Suricata to allocate excessive memory while decompressing the payload. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP2.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 [email protected]Release Notes
https://github.com/OISF/suricata/security/advisories/GHSA-45p7-j5wm-8wrx [email protected]MitigationVendor Advisory
https://redmine.openinfosecfoundation.org/issues/8513 [email protected]Permissions Required

Weakness Enumeration

CWE-IDCWE NameSource
CWE-409Improper Handling of Highly Compressed Data (Data Amplification)[email protected]

Affected Products

ProductVersions
oisf suricata
< 7.0.16
>= 8.0.0, < 8.0.5

CPE

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

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-46387
NVD Published Date:
Sep 10, 2026
NVD Last Modified:
Sep 28, 2026
Source:
[email protected]
CVE-2026-46387 Details - Not Deferred