CVE-2026-9317

Published: Sep 4, 2026Modified: Sep 8, 2026

9.2

Vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

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.

Related CWEs

CWE-306

Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References (4)

https://github.com/NangoHQ/nango/commit/ed3030a9a0f8e4f3810fd10cb3a1905a2f5f87d2

Source: disclosure@vulncheck.com

https://github.com/NangoHQ/nango/pull/7288

Source: disclosure@vulncheck.com

https://github.com/NangoHQ/nango/releases/tag/v0.71.6

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/nango-missing-authentication-rce-via-runner-trpc-server

Source: disclosure@vulncheck.com

Timeline

No history available yet.