CVE-2026-54306

Katalog CVE

CVSS 6.4 · Medium EPSS 0,28%

Kerentanan Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') pada n8n. Skor CVSS 3.1 6.4 (Medium) menurut NVD.

Deskripsi (NVD)

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, a prototype pollution vulnerability allowed a crafted public webhook payload to inject attacker-controlled fields into workflow data during internal object copying. These fields could be surfaced and consumed as normal values by downstream built-in nodes. Where a workflow combines a public webhook with action nodes that consume the resulting fields, an attacker could cause the workflow to act as a confused deputy — targeting unintended records or issuing outbound requests using the workflow owner's configured credentials. This vulnerability is fixed in 2.25.7 and 2.26.2.

Rincian

Terbit di NVD

23 Juni 2026

Terakhir diubah

26 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.4 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

EPSS (30 hari)

0,28% peluang dieksploitasi; lebih tinggi dari 18,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/n8n-io/n8n/security/advisories/GHSA-2vff-hj5x-8gq7 mitigasi · advisory vendor