CVE-2026-54307: n8n Credential Exfiltration Vulnerability

HIGH
Advisory Identifier: GHSA-pmqw-72cg-wx85
Share
CVSS 9.6
CWE-863
Published
Advisory Summary

CVE-2026-54307 is a HIGH (CVSS 9.6) credential exfiltration vulnerability (CWE-863: Incorrect Authorization) affecting n8n libraries in the npm ecosystem. The issue involves credential exfiltration via permission bypass. Remediation is available by upgrading affected packages to version 1.123.55, 2.26.2, 2.25.7.

CVE-2026-54307 at a Glance

CVE Identifier CVE-2026-54307
GHSA Identifier GHSA-pmqw-72cg-wx85
Severity HIGH
CVSS v3.1 Base Score 9.6
CWE Classification CWE-863: Incorrect Authorization
Affected Product n8n
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-54307

To remediate this vulnerability, upgrade all affected n8n dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

n8n fixed: 1.123.55 
npm install n8n@1.123.55
n8n fixed: 2.26.2 
npm install n8n@2.26.2
n8n fixed: 2.25.7 
npm install n8n@2.25.7
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls n8n

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-54307, inspect your project dependencies using npm:

npm ls n8n

Analyze the terminal output to locate any version of n8n in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.123.55), your application is affected.

Note: The npm ls n8n command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In n8n, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## 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

CVE-2026-54307 Affected n8n Versions

3 component(s)
Fixed Versions:
1.123.552.26.22.25.7
Product / Package Ecosystem Affected Versions Fixed Version
n8n
npm/n8n
npm
< 1.123.55
1.123.55
n8n
npm/n8n
npm
≥ 2.26.0
< 2.26.2
2.26.2
n8n
npm/n8n
npm
≥ 2.0.0-rc.0
< 2.25.7
2.25.7

References

GitHub Advisory / Wiki ADVISORY
https://github.com/n8n-io/n8n/security/advisories/GHSA-pmqw-72cg-wx85
NVD — CVE-2026-54307 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54307
n8n Source Repository REPOSITORY
https://github.com/n8n-io/n8n

Frequently Asked Questions

What is CVE-2026-54307?
CVE-2026-54307 is a security vulnerability in n8n involving Credential Exfiltration via Permission Bypass under CWE-863: Incorrect Authorization.
Which n8n versions are affected?
Affected versions include releases prior to 1.123.55, 2.26.2, 2.25.7 across affected packages: n8n.
What version fixes CVE-2026-54307?
Upgrading to 1.123.55, 2.26.2, 2.25.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is n8n affected?
Yes, n8n is affected in releases prior to 1.123.55, 2.26.2, 2.25.7. Upgrade your dependency to 1.123.55, 2.26.2, 2.25.7 or later.
What is the CVSS score of CVE-2026-54307?
CVE-2026-54307 has a CVSS v3.1 base score of 9.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
What CWE is associated with CVE-2026-54307?
CVE-2026-54307 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check npm dependencies for CVE-2026-54307?
Run the dependency tree command: 'npm ls n8n'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-pmqw-72cg-wx85",
  "modified" : "2026-07-08T17:37:32Z",
  "published" : "2026-06-16T23:02:05Z",
  "aliases" : [ "CVE-2026-54307" ],
  "summary" : "n8n: Credential Exfiltration via Permission Bypass",
  "details" : "## Impact\nA 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.\n\nThis issue affects instances where workflow sharing is enabled and at least one workflow has been shared with a member-level user as an Editor.\n\n## Patches\nThe 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.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict workflow sharing to fully trusted users only.\n- Audit shared workflows for unexpected credential references or recent modifications.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.\n\n---\nn8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility.\n\nCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.123.55"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.26.0"
      }, {
        "fixed" : "2.26.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0-rc.0"
      }, {
        "fixed" : "2.25.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/n8n-io/n8n/security/advisories/GHSA-pmqw-72cg-wx85"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-54307"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/n8n-io/n8n"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-16T23:02:05Z",
    "nvd_published_at" : "2026-06-23T17:17:07Z"
  }
}