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-2026-45751

CVE-2026-45751HIGH

OISF suricata — Suricata detect/transform: use-after-free in dotprefix transform

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0032   22.6     —

AFFECTED
  Product   Versions    Fixed
  suricata  < 7.0.16 –  —

TIMELINE
  May 13  Reserved by GitHub_M
  Sep 10  Published (CNA: GitHub_M)
  Sep 28  RESCORED — CVE-2026-45751 (OISF suricata). CVSS 5.9 → 7.5 (NVD).

CWE-416 · CNA: GitHub_M · CVSS v3.1 · 3 references · NVD status: Analyzed

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 13, 2026	Reserved	Reserved by GitHub_M
September 10, 2026	Published	Published (CNA: GitHub_M)
September 28, 2026	RESCORED	RESCORED — CVE-2026-45751 (OISF suricata). CVSS 5.9 → 7.5 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
OISF	suricata	—	< 7.0.16	—

Weaknesses

CWE-416

References (3)

https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 [Release Notes]
https://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx [Mitigation, Vendor Advisory]
https://redmine.openinfosecfoundation.org/issues/8537 [Permissions Required]

Authoritative record: CVE-2026-45751 at cve.org

Vendors: oisf

Weaknesses: CWE-416

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-45751 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.