CVE-2026-45751

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's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.

Score

CVSS 3.1 7.5 High

Status

Analyzed - security-advisories@github.com

Published

2026-09-10

Last modified

2026-09-11

Weaknesses

CWE-416

Affected products

• Suricata (Oisf)

References

• https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
• https://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx
• https://redmine.openinfosecfoundation.org/issues/8537