CVE-2026-102596
Nango: Production flow RBAC bypass on private flow-read routes
- State
- Published
- Severity
- 4.3 Medium
- Published
- Oct 12, 2026
- Updated
- Oct 14, 2026
- Reserved
- Sep 29, 2026
Description
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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N | GitHub_M |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
nangoNangoHQ |
|
References
- https://github.com/NangoHQ/nango/security/advisories/GHSA-vc5r-hj76-f35p
- https://github.com/NangoHQ/nango/pull/6603
- https://github.com/NangoHQ/nango/commit/3896f6abf71408b8966da1ea4afb1885647403c9
- https://github.com/NangoHQ/nango/releases/tag/managed-1.5.11-0.70.8-aae30d044d7e229807d51a3957c212f3fb689e1a
- https://github.com/NangoHQ/nango/releases/tag/v0.70.9
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.