GHSA-35jj-42hp-8gmq

Source

https://github.com/advisories/GHSA-35jj-42hp-8gmq

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-35jj-42hp-8gmq/GHSA-35jj-42hp-8gmq.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-35jj-42hp-8gmq

Aliases

CVE-2026-86077

Downstream

MINI-5xpg-vqf7-52x9

Published

2026-09-10T20:37:00Z

Modified

2026-09-10T20:45:04Z

Severity

6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N CVSS Calculator

Summary

n8n: Anonymous Approval-Gate Bypass via Reused resumeToken over the Chat WebSocket

Details

Impact

The /chat WebSocket route resumed a paused execution from a resume token without checking that the node being resumed was a chat node. n8n hands that token to anonymous form submitters, so a party with no account could present it on the chat route and release an execution waiting at an approval gate, the control an author puts in front of an action considered too consequential to automate. The patch restricts resume over the chat route and Chat Hub to chat-capable node types.

Patches

The issue has been fixed in n8n versions 2.37.7 and 2.38.2. 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 n8n instance access to fully trusted users only.
Avoid workflows that combine a Form Trigger with non-chat approval gates (Send-and-Wait, Telegram/Slack/Gmail HITL, or plain Wait nodes) on publicly accessible instances.
Audit recent executions of such workflows for unexpected completion without a corresponding approval callback.

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

Database specific

{
    "cwe_ids":  [
        "CWE-862"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-10T20:37:00Z",
    "nvd_published_at":  "2026-09-08T22:19:16Z",
    "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

2.38.0

Fixed

2.38.2

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-35jj-42hp-8gmq/GHSA-35jj-42hp-8gmq.json"

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

2.37.7

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-35jj-42hp-8gmq/GHSA-35jj-42hp-8gmq.json"