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›vulnerability›CVE-2026-71855
Name
CVE-2026-71855
Source
NVD ( link)Debian ( link)
Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, src/flow-hash.c can treat an IPv4 and IPv6 flow as equal without comparing the IP family when their raw address words, ports, protocol, VLAN, recursion level, live device, and hash bucket align. An IPv6 packet can therefore reuse IPv4 flow state or the reverse, causing incorrect flowbit state, detection bypass, or IP-only bypass. This issue is fixed in versions 8.0.6 and 7.0.17.
CWEs
CWE-697
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/OISF/suricata/commit/181b3b2fdd1fe87e4534de4fc79e29a083ef125fPatch
https://github.com/OISF/suricata/commit/4e2f23d031fbcfd72883bacd3d723c9874f23701Patch
https://github.com/OISF/suricata/commit/bc41dcc854e24487d3786ce578a8a86a8350ab20Patch
https://github.com/OISF/suricata/releases/tag/suricata-7.0.17Release Notes
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6Release Notes
https://github.com/OISF/suricata/security/advisories/GHSA-fvwh-wjcq-2586Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/8558Permissions Required

Analysis#

Affected Component
Analysis
suricata
Exploitable

Vulnerability Ratings#

5.9
CVSSv31
7.5
CVSSv31
NaN
other

Others affected component#

Name
Project
Project Version
Version
Status
suricata
buildroot
master
8.0.7
Not Affected