CVE-2026-110843

8.2 Élevée

Publiée le 15/10/2026 à 01:17 · Modifiée le 16/10/2026 à 20:17 · Analyse NVD reportée · Source : disclosure@vulncheck.com

Description

n8n before 2.41.4 and 2.42.x before 2.42.1 contains an uncontrolled resource consumption vulnerability in the unauthenticated OAuth authorize endpoint, which resolves clients by URL path but stores the caller's raw identifier as the record key. Unauthenticated attackers can send identifiers differing only in their query string to create unlimited first-party client records that bypass the registration cap, growing the database until the disk fills.

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Produits concernés

n8n-io n8n

Scores CVSS

Version	Score	Source	Vecteur
4.0	8.2 Élevée	disclosure@vulncheck.com	`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`

Faiblesses (CWE)

CWE-770

Références

https://github.com/n8n-io/n8n/security/advisories/GHSA-3qcw-p65v-c7vq
https://www.vulncheck.com/advisories/n8n-before-2.41.4-and-2.42.1-unauthenticated-unbounded-oauth-client-persistence-via-authorize-endpoint

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories