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CVE-2026-54306

MEDIUM
6.3
CVSS 4.0
Description
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.

Metadata

CVE ID
CVE-2026-54306
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-12 17:46 UTC
Published
2026-06-23 15:43 UTC
Last updated
2026-06-23 15:43 UTC
Primary CWE
CWE-1321
CWE-1321: Improperly Controlled Modification of Object Proto…
Vendor / Product
n8n-io / n8n
Sources
cve.org  ·  NVD

Severity & Metrics

6.3 MEDIUM CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Affected products (1)
VendorProductPlatformVersions
n8n-io n8n — >= 2.26.0, < 2.26.2, < 2.25.7
Weakness (CWE)
CWESourceDescription
CWE-1321 cna CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.3 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
References (1)
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