CVE-2026-70474 Details
Description
Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows. Prior to 3.1.3, Flowise has three OAuth2 credential endpoints that look up credentials by id alone with no workspaceId filter. The authorize, callback, and refresh handlers query the Credential table by id only; callback and refresh are whitelisted from authentication. This allows any authenticated user to initiate OAuth2 flows against credentials belonging to other workspaces, allows an unauthenticated attacker to forge OAuth2 callbacks to overwrite tokens in any credential, and allows an unauthenticated attacker to refresh tokens for any credential. The affected routes include /api/v1/oauth2-credential/authorize/<VICTIM_CREDENTIAL_UUID>, /api/v1/oauth2-credential/callback?code=ATTACKER_AUTH_CODE&state=<VICTIM_CREDENTIAL_UUID>, and /api/v1/oauth2-credential/refresh/<VICTIM_CREDENTIAL_UUID>. This issue is fixed in version 3.1.3.
A vulnerability in Flowise prior to version 3.1.3 allows for cross-workspace OAuth2 credential access and unauthorized token manipulation. The issue arises because three OAuth2 credential endpoints—authorize, callback, and refresh—only verify credentials by ID without considering the associated workspace. This flaw enables any authenticated user to initiate OAuth2 flows using credentials from other workspaces. Furthermore, it allows an unauthenticated attacker to forge OAuth2 callbacks, overwriting tokens in any credential, and to refresh tokens for any credential without authentication.
Users should update to Flowise version 3.1.3 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-wch5-xp77-fxg4 | CISA-ADP | ExploitMitigationVendor Advisory |
| https://github.com/FlowiseAI/Flowise/releases/tag/[email protected] | [email protected] | Release Notes |
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-wch5-xp77-fxg4 | [email protected] | ExploitMitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| flowiseai flowise | < 3.1.3 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 11, 2026 | Initial Analysis | [email protected] |
| Aug 5, 2026 | CVE Modified | CISA-ADP |
| Aug 4, 2026 | New CVE Received | [email protected] |