CVE-2026-41273
High
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.
SeverityHigh
CVSS8.2
Exploit probability—
ProductFlowise
PublishedApr 23, 2026
First seenApr 23, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Update
- flowiseai flowise3.1.0 or later
- flowise3.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| flowiseai flowise | v < 3.1.0 | 3.1.0 |
| flowisenpm | v < 3.1.0 | 3.1.0 |
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