CVE-2026-54307

HIGH

n8n: Credential Exfiltration via Permission Bypass

Published June 16, 2026Updated July 8, 2026Source: osv

Summary

## Impact A member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access. This issue affects instances where workflow sharing is enabled and at least one workflow has been shared with a member-level user as an Editor. ## Patches The issue has been fixed in n8n versions 1.123.55, 2.25.7, and 2.26.2. Users should upgrade to one of these versions or later to remediate the vulnerability. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Restrict workflow sharing to fully trusted users only. - Audit shared workflows for unexpected credential references or recent modifications. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures. --- n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Remediation

Upgrade to the fixed version using your package manager.

npm

Update n8n to 1.123.55 or later

npm install n8n@1.123.55

npm

Update n8n to 2.26.2 or later

npm install n8n@2.26.2

npm

Update n8n to 2.25.7 or later

npm install n8n@2.25.7

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

Package	Ecosystem	Affected	Fixed In
n8n	npm	All versions	1.123.55
n8n	npm	All versions	2.26.2
n8n	npm	All versions	2.25.7

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-863
Incorrect AuthorizationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.6 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References

Frequently Asked Questions

What is CVE-2026-54307?: n8n: Credential Exfiltration via Permission Bypass This vulnerability has been assigned a severity rating of HIGH (CVSS score: 9.6/10).
How do I check if my project is affected by CVE-2026-54307?: CVE-2026-54307 affects n8n. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-54307 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

9.6

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-pmqw-72cg-wx85

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