rootpwn

high · CVSS v3 7.5

CVE-2026-63447

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Fr…

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in src/app-layer-ftp.c can continue allocating transactions after app-layer.protocols.ftp.max-tx is reached while processing one large chunk of FTP command data. The oversized transaction list is repeatedly processed with quadratic complexity after the too_many_transactions event, allowing crafted FTP traffic to degrade packet processing, reduce monitoring visibility, or cause denial of service. This issue is fixed in version 8.0.6.

Scores

Severity
high
CVSS v2
7.8
CVSS v3
7.5
CVSS v4
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EPSS
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