GHSA-xvh5-5qg4-x9qp

Source

https://github.com/advisories/GHSA-xvh5-5qg4-x9qp

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-xvh5-5qg4-x9qp/GHSA-xvh5-5qg4-x9qp.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-xvh5-5qg4-x9qp

Aliases

CVE-2026-27496

Published

2026-03-25T17:00:25Z

Modified

2026-03-25T17:18:55.306585Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

n8n has In-Process Memory Disclosure in its Task Runner

Details

Impact

An authenticated user with permission to create or modify workflows could use the JavaScript Task Runner to allocate uninitialized memory buffers. Uninitialized buffers may contain residual data from the same Node.js process — including data from prior requests, tasks, secrets, or tokens — resulting in information disclosure of sensitive in-process data. - Task Runners must be enabled using N8N_RUNNERS_ENABLED=true. - In external runner mode, the impact is limited to data within the external runner process.

Patches

The issue has been fixed in n8n versions >= 1.123.22, >= 2.10.1 , and >= 2.9.3. Users should upgrade to this version or later to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Limit workflow creation and editing permissions to fully trusted users only. - Use external runner mode (N8N_RUNNERS_MODE=external) to isolate the runner process.

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

Database specific

{
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-25T17:00:25Z",
    "cwe_ids": [
        "CWE-908"
    ],
    "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

0Unknown introduced version / All previous versions are affected

Fixed

1.123.22

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-xvh5-5qg4-x9qp/GHSA-xvh5-5qg4-x9qp.json"

npm / n8n

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

2.10.0

Fixed

2.10.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-xvh5-5qg4-x9qp/GHSA-xvh5-5qg4-x9qp.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

2.9.3

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-xvh5-5qg4-x9qp/GHSA-xvh5-5qg4-x9qp.json"