CVE-2026-45759

High

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 could repeatedly perform expensive parsing of large HTTP `Content-Disposition` headers during HTTP response body processing. Crafted HTTP traffic could cause excessive CPU usage and denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, use a rule like `alert http1 any any -> any any (sid: 1; http.request_header; content: "Content-Disposition:"; startswith; bsize: > 8192; bypass;)`.

SeverityHigh

CVSS7.5

Exploit probability—

ProductOisf Suricata

PublishedSep 10, 2026

First seenSep 10, 2026

Weakness typeCWE-400Uncontrolled resource consumption

How to fix

Update

oisf suricata8.0.5 or later

Affected products

Product	Affected versions	Fixed in
oisf suricata	7.0.0 ≤ v ≤ 7.0.16, 8.0.0 ≤ v < 8.0.5	8.0.5

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