What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-04 · updated 2026-09-23
• Weakness: CWE-306

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

• NangoHQ nango: before 0.71.6 — fixed in 0.71.6

How to fix

Upgrade to a fixed version: NangoHQ nango 0.71.6. Check the vendor advisory for mitigations.

References

• https://github.com/NangoHQ/nango/commit/ed3030a9a0f8e4f3810fd10cb3a1905a2f5f87d2
• https://github.com/NangoHQ/nango/pull/7288
• https://github.com/NangoHQ/nango/releases/tag/v0.71.6
• https://www.vulncheck.com/advisories/nango-missing-authentication-rce-via-runner-trpc-server

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