PT-2026-34738 · Flowiseai · Flowise

Published 2026-04-23 · Updated 2026-04-23 · CVE-2026-41273

Mitre

CVSS v4.0

7.7

High

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

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.

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-41273

Affected Products

Flowise

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-41273 · Security Note
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6f7g-v4pp-r667 · Note