Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-63450

CVE-2026-63450MEDIUM

OISF suricata — Suricata ftp: RETR/STOR before PORT/PASV can disable further IDS app-layer detection

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  L  N    5.3   .0025   14.6     —

AFFECTED
  Product   Versions   Fixed
  suricata  < 8.0.6 –  —

TIMELINE
  Jul 16  Reserved by GitHub_M
  Sep 18  Published (CNA: GitHub_M)
  Sep 28  RESCORED — CVE-2026-63450 (OISF suricata). CVSS 3.7 → 5.3 (NVD).

CWE-755 · CNA: GitHub_M · CVSS v3.1 · 6 references · NVD status: Analyzed

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverable protocol event. The fatal state disables FTP application-layer parsing for the remainder of the TCP flow, so later commands can evade parser-dependent rules and logging; IPS mode instead drops the flow. This issue is fixed in version 8.0.6.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 16, 2026	Reserved	Reserved by GitHub_M
September 18, 2026	Published	Published (CNA: GitHub_M)
September 28, 2026	RESCORED	RESCORED — CVE-2026-63450 (OISF suricata). CVSS 3.7 → 5.3 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
OISF	suricata	—	< 8.0.6	—

Weaknesses

CWE-755

References (6)

https://github.com/OISF/suricata/commit/52490b8c26909772801afed98df63a6d62f3af18 [Patch]
https://github.com/OISF/suricata/commit/feb0ff91159cea474a983adf92e4b56fb16e4ffc [Patch]
https://github.com/OISF/suricata/pull/15704 [Patch]
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 [Release Notes]
https://github.com/OISF/suricata/security/advisories/GHSA-56wx-7hqh-wfgr [Vendor Advisory]
https://redmine.openinfosecfoundation.org/issues/8659 [Permissions Required]

Authoritative record: CVE-2026-63450 at cve.org

Vendors: oisf

Weaknesses: CWE-755

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-63450 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.