CVE-2026-9317

Nango < 0.71.6 Missing Authentication RCE via runner tRPC server

HIGH
8.1
CVSS Score
Published: September 4, 2026 at 05:56 PM UTC
Updated: September 23, 2026 at 05:30 PM UTC
1 product affected across 1 vendorNango

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Severity
HIGH8.1
Exploit prediction
EPSS 1%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.71.6
Affected range stops below 0.71.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-306

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