CVE-2026-54306
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk17th percentile — higher than 17% of all known CVEs
Summary
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.
Risk Assessment
The risk is that 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, potentially leading to unauthorized access or data leakage.
Recommendation
It is recommended to immediately upgrade n8n to version 2.25.7 or 2.26.2, which contain the fix for this vulnerability.
Original NVD description (English source)
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.