CVE-2026-69250

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design and performs a server-side HTTP request to the credential-controlled accessTokenUrl without SSRF protections. Runtime validation confirmed that the endpoint was reachable without authentication, triggered outbound POST requests to an attacker-controlled server, reflected the full remote response body to the caller through tokenInfo, and sent client_id, client_secret, grant_type=refresh_token, and refresh_token in the request body. This issue is fixed in version 3.1.3.

• CWE-639

• https://github.com/FlowiseAI/Flowise/commit/da8b251a9a4c59484ceaf6f71df7406aede7bef2Patch
• https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3Patch, Release Notes
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-r745-8hwv-h473Exploit, Vendor Advisory
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-r745-8hwv-h473Exploit, Vendor Advisory

Published

Aug 4, 2026

Last Modified

Sep 14, 2026

Status

Analyzed

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
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