CVE-2026-110842
CVE-2026-110842 · n8n before 2.41.4 and 2.42.1 Prototype Pollution via MCP Workflow-Validation Interpreter
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n8n before 2.41.4 and 2.42.x before 2.42.1 contains a prototype pollution vulnerability in the MCP workflow-validation tool, whose interpreter evaluates caller-supplied code in the main process, reads inherited properties, and permits assignment onto shared prototypes. An authenticated member holding only a workflow:read grant can replace a built-in method with one returning a truthy value so server-side permission checks accept unheld scopes, enabling takeover of owner accounts not protected by MFA.
CVSS 7.7 · Élevée · EPSS 0,3% · Correctif disponible
- Publication
- Mise à jour
Produits et versions concernés
n8n
- Versions du logiciel
- ≥ 0, < 2.41.4: Concernée (semver)
- ≥ 2.42.0, < 2.42.1: Concernée (semver)
Mettez à jour vers 2.41.4; Mettez à jour vers 2.42.1