NangoHQ Nango up to 0.70.8 API Routes improper authorization

Summaryinfo

A vulnerability labeled as problematic has been found in NangoHQ Nango up to 0.70.8. This impacts an unknown function of the component API Routes. The manipulation results in improper authorization. This vulnerability is cataloged as CVE-2026-102596. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in NangoHQ Nango up to 0.70.8. Affected is an unknown part of the component API Routes. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality. CVE summarizes:

Nango is an open-source platform for connecting agents and products to third-party APIs. Prior to 0.70.9, on accounts with RBAC enabled through a plan with has_rbac=true, two private flow-read routes, GET /api/v1/integrations/:providerConfigKey/flows and GET /api/v1/flow/:flowName, apply webAuth but omit can({ action: 'read', resource: 'flow', scopedBy: envScope }). A same-team user with the development_full_access role can therefore request env=prod and read production integration flow metadata or named flow configuration despite being denied by guarded production routes. Both controllers use res.locals.environment from the authenticated account, so the issue bypasses the production role boundary but does not cross tenant boundaries. This issue is fixed in version 0.70.9 and managed-1.5.11-0.70.8-aae30d044d7e229807d51a3957c212f3fb689e1a

The advisory is available at github.com. This vulnerability is traded as CVE-2026-102596 since 09/29/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

Upgrading to version 0.70.9 eliminates this vulnerability.

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Productinfo

Vendor

• NangoHQ

Name

• Nango

Version

• 0.70.0
• 0.70.1
• 0.70.2
• 0.70.3
• 0.70.4
• 0.70.5
• 0.70.6
• 0.70.7
• 0.70.8

Website

• Product: https://github.com/NangoHQ/nango/

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