SEPTEMBER 15, 2026
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Case File

CVE-2026-46387

HIGH · CVSS 7.5 EPSS 0.52% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-10 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

Suricata's HTTP/2 decompression mechanism prior to versions 7.0.16 and 8.0.5 is vulnerable to memory allocation issues, allowing an attacker to exploit crafted HTTP/2 DATA payloads to trigger excessive memory consumption. This can lead to potential denial-of-service conditions, impacting network performance and security monitoring capabilities. Organizations utilizing Suricata for network security should prioritize upgrading to the patched versions or consider disabling HTTP/2 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-46387
Severity
HIGH
CVSS
7.5
EPSS
0.52%

Original NVD 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.