GHSA-2364-jh4q-m9vm: Flowise: IDOR vulnerability exists at the GET /api/v1/organization/customer-default-source endpoint

August 4, 2026

An Insecure Direct Object Reference (IDOR) vulnerability exists at the GET /api/v1/organization/customer-default-source endpoint. This flaw allows an authenticated attacker to bypass authorization checks and retrieve sensitive payment and profile information of other customers by manipulating the customerId parameter. The exposed data includes email addresses, account balances, currency types, and internal billing configurations.

References

github.com/FlowiseAI/Flowise/commit/4d7899d02ca370a5510406be5c91483085a412f9
github.com/FlowiseAI/Flowise/pull/6321
github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.3
github.com/FlowiseAI/Flowise/security/advisories/GHSA-2364-jh4q-m9vm
github.com/advisories/GHSA-2364-jh4q-m9vm

Code Behaviors & Features

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