CVE-2026-21858 - Vulnerability Details

Threat entity extracted from intelligence sources

Frequency
6
occurrences
First Seen
January 8, 2026
Last Seen
February 4, 2026

CVE-2026-21858 is a vulnerability tracked across 5 threat clusters and 6 intelligence report mentions on ThreatCluster. First observed January 8, 2026; most recent activity February 4, 2026.

Related Threat Clusters

Recent Intelligence Reports

  • Critical n8n flaws disclosed along with public exploits — Bleepingcomputer · February 4, 2026
  • Vulnerability Workflow n8n | CVE-2026-21858 — Stormshield · January 19, 2026
  • Malicious npm packages target the n8n automation platform in a supply chain attack — Csoonline · January 12, 2026
  • CVE-2026-21858 — Arcticwolf · January 9, 2026
  • Ni8mare Vulnerability Allows Attackers to Hijack n8n Servers, Exploit Publicly Released — Cyberpress · January 8, 2026
  • Ni8mare Vulnerability Let Attackers Hijack n8n Servers – Exploit Released and 26,512 Hosts Vulnerable — Cybersecuritynews · January 8, 2026

CVSS v3.1 Breakdown