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VULNERABILITIES

CVE-2026-71855 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/OISF/suricata/commit/181b3b2fdd1fe87e4534de4fc79e29a083ef125f [email protected]
https://github.com/OISF/suricata/commit/4e2f23d031fbcfd72883bacd3d723c9874f23701 [email protected]
https://github.com/OISF/suricata/commit/bc41dcc854e24487d3786ce578a8a86a8350ab20 [email protected]
https://github.com/OISF/suricata/releases/tag/suricata-7.0.17 [email protected]
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 [email protected]

see all 7 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-697Incorrect Comparison[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-71855
NVD Published Date:
Sep 18, 2026
NVD Last Modified:
Sep 25, 2026
Source:
[email protected]