CVE-2026-45759: CWE-400: Uncontrolled Resource Consumption in OISF suricata
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;)`.
AI Analysis
Technical Summary
Suricata versions prior to 7.0.16 and 8.0.5 are vulnerable to uncontrolled resource consumption (CWE-400) due to repeated expensive parsing of large HTTP Content-Disposition headers during HTTP response body processing. This can be triggered by crafted HTTP traffic, causing excessive CPU usage and denial of service. The vulnerability is fixed in Suricata versions 7.0.16 and 8.0.5. A workaround rule is available to mitigate the issue by bypassing oversized Content-Disposition headers.
Potential Impact
Exploitation of this vulnerability can cause excessive CPU consumption, resulting in denial of service conditions on affected Suricata deployments. There is no impact on confidentiality or integrity reported. The denial of service could disrupt network security monitoring and intrusion detection capabilities.
Mitigation Recommendations
A fix is available in Suricata versions 7.0.16 and 8.0.5. Users should upgrade to these versions or later. As a temporary workaround, users can implement a Suricata rule to bypass processing of HTTP Content-Disposition headers larger than 8192 bytes: alert http1 any any -> any any (sid: 1; http.request_header; content: "Content-Disposition:"; startswith; bsize: > 8192; bypass;).
CVE-2026-45759: CWE-400: Uncontrolled Resource Consumption in OISF suricata
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;)`.
CVSS v3.1
Score 7.5high
Affected software
OISF
suricata
pkg:github/oisf/suricataRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Suricata versions prior to 7.0.16 and 8.0.5 are vulnerable to uncontrolled resource consumption (CWE-400) due to repeated expensive parsing of large HTTP Content-Disposition headers during HTTP response body processing. This can be triggered by crafted HTTP traffic, causing excessive CPU usage and denial of service. The vulnerability is fixed in Suricata versions 7.0.16 and 8.0.5. A workaround rule is available to mitigate the issue by bypassing oversized Content-Disposition headers.
Potential Impact
Exploitation of this vulnerability can cause excessive CPU consumption, resulting in denial of service conditions on affected Suricata deployments. There is no impact on confidentiality or integrity reported. The denial of service could disrupt network security monitoring and intrusion detection capabilities.
Mitigation Recommendations
A fix is available in Suricata versions 7.0.16 and 8.0.5. Users should upgrade to these versions or later. As a temporary workaround, users can implement a Suricata rule to bypass processing of HTTP Content-Disposition headers larger than 8192 bytes: alert http1 any any -> any any (sid: 1; http.request_header; content: "Content-Disposition:"; startswith; bsize: > 8192; bypass;).
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-13T06:54:34.222Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa31e6991cc7f3848be407c
Added to database: 09/10/2026, 21:17:29 UTC
Last enriched: 09/10/2026, 21:32:02 UTC
Last updated: 09/10/2026, 22:12:31 UTC
Views: 5
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