GHSA-h86q-fx34-gfjr

Suggest an improvement
Source
https://github.com/advisories/GHSA-h86q-fx34-gfjr
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-h86q-fx34-gfjr/GHSA-h86q-fx34-gfjr.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-h86q-fx34-gfjr
Aliases
Downstream
Published
2026-06-16T22:39:16Z
Modified
2026-07-20T13:45:32Z
Severity
  • 7.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N CVSS Calculator
  • 6.8 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N CVSS Calculator
Summary
n8n: Reflected XSS via Facebook, WhatsApp, and Microsoft Teams Trigger Webhook Verification Endpoints
Details

Impact

An endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or Content-Security-Policy headers, enabling reflected XSS in the n8n origin when a logged-in user visits a crafted URL.

Patches

The issue has been fixed in n8n version 2.24.0. 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 activation permissions to fully trusted users only.
  • Disable the affected nodes by adding n8n-nodes-base.facebookTrigger, n8n-nodes-base.whatsAppTrigger, n8n-nodes-base.facebookLeadAdsTrigger, and n8n-nodes-base.microsoftTeamsTrigger to the NODES_EXCLUDE environment variable.

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

Database specific 
{
    "cwe_ids":  [
        "CWE-79"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-06-16T22:39:16Z",
    "nvd_published_at":  "2026-06-23T16:17:01Z",
    "severity":  "MODERATE"
}
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
2.24.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-h86q-fx34-gfjr/GHSA-h86q-fx34-gfjr.json"