CVE-2026-45759
Publication date 14 September 2026
Last updated 14 September 2026
Ubuntu priority
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;)`.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| suricata | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-45759
- https://github.com/OISF/suricata/security/advisories/GHSA-cfq5-g2v5-6652
- https://redmine.openinfosecfoundation.org/issues/8531 (suricata-7.0.16)
- https://redmine.openinfosecfoundation.org/issues/8530 (suricata-8.0.5)
- https://github.com/OISF/suricata/commit/a41b135c5c054c806346f8d6e02d67b8f5594be0 (suricata-7.0.16)
- https://github.com/OISF/suricata/commit/8abe0f2a8de0d910d4d4461474f5bfb519877053 (suricata-8.0.5)
- https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
- https://redmine.openinfosecfoundation.org/issues/8529