Vulnerability Details CVE-2026-45759
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;)`.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 44.9%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-45759
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cpe:2.3:a:oisf:suricata:7.0.0
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cpe:2.3:a:oisf:suricata:7.0.1
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cpe:2.3:a:oisf:suricata:7.0.10
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cpe:2.3:a:oisf:suricata:7.0.11
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cpe:2.3:a:oisf:suricata:7.0.12
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cpe:2.3:a:oisf:suricata:7.0.13
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cpe:2.3:a:oisf:suricata:7.0.14
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cpe:2.3:a:oisf:suricata:7.0.15
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cpe:2.3:a:oisf:suricata:7.0.16
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cpe:2.3:a:oisf:suricata:7.0.2
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cpe:2.3:a:oisf:suricata:7.0.3
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cpe:2.3:a:oisf:suricata:7.0.4
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cpe:2.3:a:oisf:suricata:7.0.5
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cpe:2.3:a:oisf:suricata:7.0.6
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cpe:2.3:a:oisf:suricata:7.0.7
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cpe:2.3:a:oisf:suricata:7.0.8
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cpe:2.3:a:oisf:suricata:7.0.9
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cpe:2.3:a:oisf:suricata:8.0.0
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cpe:2.3:a:oisf:suricata:8.0.1
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cpe:2.3:a:oisf:suricata:8.0.2
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cpe:2.3:a:oisf:suricata:8.0.3
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cpe:2.3:a:oisf:suricata:8.0.4