CVE-2026-70478 Details
Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST /api/v1/oauth2-credential/refresh/:credentialId endpoint is included in WHITELIST_URLS and requires no authentication. The endpoint decrypts the stored credential, sends a refresh request to the configured OAuth provider with the client secret and refresh token, and returns the refreshed access_token in the response body. An attacker with a credential ID can use the token to access the victim's connected service and can also exhaust refresh-token quota. This issue is fixed in 3.1.3.
A vulnerability in Flowise prior to version 3.1.3 allows for unauthorized access to OAuth2 access tokens through the POST /api/v1/oauth2-credential/refresh/:credentialId endpoint. This endpoint, which is included in WHITELIST_URLS and requires no authentication, decrypts stored credentials and sends refresh requests to OAuth providers. An attacker with a valid credential ID can intercept the refreshed access token, enabling access to the victim's connected service and the potential to exhaust refresh token quotas.
Users are advised to update Flowise to 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
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-qgvm-j2hm-6m38 | CISA-ADP | Vendor Advisory |
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-qgvm-j2hm-6m38 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| flowiseai flowise | < 3.1.3 |
CPE
Remediation
| |
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] |