GHSA-xwx6-jjhv-84p8

Suggest an improvement
Source
https://github.com/advisories/GHSA-xwx6-jjhv-84p8
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-xwx6-jjhv-84p8/GHSA-xwx6-jjhv-84p8.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-xwx6-jjhv-84p8
Aliases
Downstream
Published
2026-07-22T22:12:33Z
Modified
2026-08-12T04:26:16Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
n8n: Prototype Pollution via Dot-Notation Field Names Leads To Instance-Wide Denial of Service
Details

Impact

The Edit Fields (Set) node assigned output fields through a dot-notation path setter without restricting the field name, so an authenticated user could name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global was used on the request-authentication path, the instance then failed every authenticated request, causing a instance-wide denial of service for all users until the process was restarted.

Patches

The issue has been fixed in n8n versions 1.123.67, 2.31.5, and 2.32.1. 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 n8n instance access to fully trusted users only.
  • Disable or restrict workflow creation and execution permissions for untrusted users.
  • Monitor for unexpected process-wide HTTP 500 errors and restart the process promptly if they occur.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Database specific 
{
    "cwe_ids":  [
        "CWE-1321"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-22T22:12:33Z",
    "nvd_published_at":  null,
    "severity":  "HIGH"
}
References

Affected packages

npm / n8n

Package

Name
n8n
View open source insights on deps.dev
Purl
pkg:npm/n8n

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.123.67

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-xwx6-jjhv-84p8/GHSA-xwx6-jjhv-84p8.json"

npm / n8n

Package

Name
n8n
View open source insights on deps.dev
Purl
pkg:npm/n8n

Affected ranges

Type
SEMVER
Events
Introduced
2.32.0
Fixed
2.32.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-xwx6-jjhv-84p8/GHSA-xwx6-jjhv-84p8.json"

npm / n8n

Package

Name
n8n
View open source insights on deps.dev
Purl
pkg:npm/n8n

Affected ranges

Type
SEMVER
Events
Introduced
2.0.0-rc.0
Fixed
2.31.5

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-xwx6-jjhv-84p8/GHSA-xwx6-jjhv-84p8.json"