CVE-2026-45759
highpriority · track · 0EPSS 0.008 · 58 %ileUSEPSS · scored 2026-10-27
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;)`.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
sources
Which sources assert this record, and when.
references (3) nvd
External citations — patches, advisories, analysis.
- https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315Release NotesVendor Advisory
- https://github.com/OISF/suricata/security/advisories/GHSA-cfq5-g2v5-6652Vendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8529Permissions Required
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