Missing Authorization in Flowise - CVE-2026-41266
Published: May 4, 2026
Vulnerability identifier: #VU129612
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-41266
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FlowiseAI
Affected software:
Flowise
Flowise
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to missing authorization in the /api/v1/public-chatbotConfig/:id endpoint when handling requests for public chatbot configuration data. A remote attacker can send a request with a known chatflow UUID to disclose sensitive information.
Knowledge of a chatflow UUID is the only prerequisite and may be obtained from embedded chat widgets, referrer headers, or logs.
How to mitigate CVE-2026-41266
Install security update from vendor's website.