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CVE-2026-42236

HIGH · CVSS 7.5 EPSS %0.15 Public Exploit

Kaynak: NVD + CISA KEV + EPSS · Yayınlanma: 2026-05-04T19:16:06.337 · Çekilme zamanı: 2026-06-03T18:00:28.952114+00:00

CyberRota Yorumu

Bellek tüketimine neden olabilir. Uzaktan istismar edilebilir olabilir.

Public Exploit Sinyali

Bu CVE için açıklama veya referanslarda public exploit / PoC / GitHub / Metasploit sinyali tespit edildi.

GitHub PoC Linkleri

Not: Bu bağlantılar yalnızca güvenlik araştırması ve doğrulama amacıyla listelenmiştir.

CVE
CVE-2026-42236
Severity
HIGH
CVSS
7.5
EPSS
%0.15

Orijinal NVD Açıklaması

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the MCP OAuth client registration endpoint accepted unauthenticated requests and stored client data without adequate resource controls. An unauthenticated remote attacker could exhaust server memory resources by sending large registration payloads, rendering the n8n instance unavailable. The MCP enable/disable toggle gates MCP access but did not restrict client registrations, meaning the endpoint is reachable regardless of whether MCP access is enabled on the instance. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.