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CVE-2026-45759

Suricata http1: quadratic Content-Disposition processing can lead to denial of service PUBLISHED

Description (CNA)

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;)`.

Affected (CNA)

Vendor / productVersions
OISF / suricataaffected < 7.0.16; affected >= 8.0.0, < 8.0.5

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.