CVE-2026-45761

Name	CVE-2026-45761
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, a crafted rule using mixed-case frame syntax could trigger a heap buffer overflow while Suricata is loading signatures. The issue is reached during rule parsing/loading rather than by network traffic alone. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, preprocess rules to check that frames are all lowercase and/or only load trusted rulesets.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
suricata (PTS)	trixie	1:7.0.10-1+deb13u4	vulnerable
	forky, sid	1:8.0.6-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
suricata	source	(unstable)	1:8.0.5-1

Notes

https://github.com/OISF/suricata/security/advisories/GHSA-r74x-74x5-r9vm
https://redmine.openinfosecfoundation.org/issues/8528 (suricata-7.0.16)
https://redmine.openinfosecfoundation.org/issues/8527 (suricata-8.0.5)
https://github.com/OISF/suricata/commit/df3336bf4f8e8034570b1608f87065391d79c022 (suricata-7.0.16)
https://github.com/OISF/suricata/commit/31d3977720990bb0efd20be08a6c2362287ea460 (suricata-8.0.5)