CVE-2026-31934

HIGH

Suricata smtp/mine: quadratic complexity in extracting urls

Title source: cna
STIX 2.1

Description

Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, there is a quadratic complexity issue when searching for URLs in mime encoded messages over SMTP leading to a performance impact. This issue has been patched in version 8.0.4.

References (2)

Scores

CVSS v3 7.5
EPSS 0.0005
EPSS Percentile 15.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-407
Status published
Products (2)
oisf/suricata 8.0.0 - 8.0.4
OISF/suricata >= 8.0.0, < 8.0.4
Published Apr 02, 2026
Tracked Since Apr 02, 2026