---
id: CVE-2026-9317
title: >-
  Nango before 0.71.6 contains a missing authentication vulnerability in the
  runner tRPC server that allows unauthenticated attackers to execute arbitrary
  JavaScript code by invoking the exposed start procedure without credentials
summary: >-
  Nango before 0.71.6 contains a missing authentication vulnerability in the
  runner tRPC server that allows unauthenticated attackers to execute arbitrary
  JavaScript code by invoking the exposed start procedure without credentials.
  Attacke…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-306
vendor: NangoHQ
product: nango
affected:
  - nango < 0.71.6
published: '2026-09-04'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T17:17:45.130'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-9317'
references:
  - url: >-
      https://github.com/NangoHQ/nango/commit/ed3030a9a0f8e4f3810fd10cb3a1905a2f5f87d2
    label: disclosure@vulncheck.com
  - url: 'https://github.com/NangoHQ/nango/pull/7288'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/NangoHQ/nango/releases/tag/v0.71.6'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/nango-missing-authentication-rce-via-runner-trpc-server
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00677
epssPercentile: 0.50862
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-08T17:44:57.731343Z'
ingestedAt: '2026-09-08T19:08:49.594Z'
---

## Overview

Nango before 0.71.6 contains a missing authentication vulnerability in the runner tRPC server that allows unauthenticated attackers to execute arbitrary JavaScript code by invoking the exposed start procedure without credentials. Attackers with network access to the runner port can send requests to the unauthenticated start procedure, bypassing the unenforced RUNNER_SECRET_KEY environment variable, to achieve remote code execution within the runner process.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.