CVE-2026-9317

9.2 criticalEPSS 1.3%

Critical (9.2). EPSS 1.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

9.2 critical

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

CVSS 3.1

8.1 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-31)
CWE: CWE-306
Published: 2026-09-04
Modified: 2026-09-23
Record from: the NVD, synced 2026-10-19

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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