Performance Degradation in Suricata Network IDS by OISF
CVE-2026-31933

7.5HIGH

Key Information:

Vendor

Oisf

Status
Suricata
Vendor
CVE Published:
2 April 2026

What is CVE-2026-31933?

Suricata, known as a versatile network intrusion detection and prevention system, is subject to a performance degradation problem when handling specially crafted traffic. This issue leads to a slowdown in its processing capabilities while operating in IDS mode, potentially compromising the effectiveness of network monitoring and response. Users are strongly advised to update to versions 7.0.15 or 8.0.4, where this vulnerability has been effectively addressed.

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Affected Version(s)

suricata < 7.0.15 < 7.0.15

suricata >= 8.0.0, < 8.0.4 < 8.0.0, 8.0.4

References

https://github.com/OISF/suricata/security/advisories/GHSA...
x_refsource_CONFIRM
https://redmine.openinfosecfoundation.org/issues/8272
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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