CVE-2026-9317

critical · 9.2

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.

9.2

CVSS

1.3%

EPSS (exploit prob.)

69th

EPSS percentile

2026-09-04

Published

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

Weaknesses

CWE-306

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-9317