Nango: Production flow RBAC bypass on private flow-read routes

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102596
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-12 22:17:02 UTC
Updated2026-10-14 12:17:17 UTC
DescriptionNango 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

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

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

Problem Types: CWE-862 | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA NangoHQ Nango affected < 0.70.9 Not specified

References

ReferenceSourceLinkTags
github.com/NangoHQ/nango/releases/tag/managed-1.5.11-0.70.8-aae30d044d7e... [email protected] github.com
github.com/NangoHQ/nango/security/advisories/GHSA-vc5r-hj76-f35p 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/NangoHQ/nango/pull/6603 [email protected] github.com
github.com/NangoHQ/nango/commit/3896f6abf71408b8966da1ea4afb1885647403c9 [email protected] github.com
github.com/NangoHQ/nango/releases/tag/v0.70.9 [email protected] github.com
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