CVE-2026-41273 Details
Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, Flowise contains an authentication bypass vulnerability that allows an unauthenticated attacker to obtain OAuth 2.0 access tokens associated with a public chatflow. By accessing a public chatflow configuration endpoint, an attacker can retrieve internal workflow data, including OAuth credential identifiers, which can then be used to refresh and obtain valid OAuth 2.0 access tokens without authentication. This vulnerability is fixed in 3.1.0.
An authentication bypass vulnerability has been identified in Flowise versions prior to 3.1.0. This vulnerability allows unauthenticated attackers to obtain OAuth 2.0 access tokens linked to public chatflows. By accessing a public chatflow configuration endpoint, attackers can retrieve internal workflow data, including OAuth credential identifiers. These identifiers can then be used to refresh and acquire valid OAuth 2.0 access tokens without authentication. The vulnerability arises because the public chatflow configuration endpoint returns sensitive flow data, including OAuth credential identifiers, without any authentication or authorization checks. This issue is particularly concerning for self-hosted Flowise deployments, where public chatflows are often exposed to the internet and require unauthenticated access by design.
Users are advised to update Flowise to version 3.1.0 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 Apr 24, 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-6f7g-v4pp-r667 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6f7g-v4pp-r667 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| flowiseai flowise | < 3.1.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | Initial Analysis | [email protected] |
| Apr 23, 2026 | New CVE Received | [email protected] |