Vulnerability · Published Sep 4, 2026 · Assigned by VulnCheck

CVE-2026-9317Nango < 0.71.6 Missing Authentication RCE via runner tRPC server

High 8.1

In plain English

A high-severity missing authentication in nango from NangoHQ. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)1.3%top 30.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
NangoHQ	nango	0 – before 0.71.6

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

nango v0.71.6 Release Notes release-notes
Pull Request issue-tracking, patch
Patch Commit patch
https://www.vulncheck.com/advisories/nango-missing-authentication-rce-via-runner-trpc-server third-party-advisory