CVE Feed
8.5 High

Flowise is a drag & drop user interface to build a customized large language model flow.

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 clientid, clientsecret, granttype=refreshtoken, and refreshtoken in the request body. This issue is fixed in version 3.1.3.

Part of the AI stack

This affects Flowise, in Agent frameworks.

Assessment

CVSS
8.5 (v4.0)
Severity
High
EPSS
0.57% chance of exploitation in the next 30 days
Known exploited
Not listed in CISA KEV
Exploit availability
Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published
4 August 2026
Last updated
23 October 2026
Affected
FlowiseAI · Flowise
Weakness
CWE-639
Assigner
security-advisories@github.com

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

At the source

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

Submit a proof of concept
Before you submit *

Query this programmatically

Agents can read this through the MCP endpoint, or over HTTP:

curl https://cve.zerocrew.in/api/cve/CVE-2026-69250