Vulnerability Report

CVE-2026-41266

Title: Sensitive Data Exposure via API Endpoint

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2026-41266.

CWE Category CWE-200

Published Date Apr 23, 2026

Modified Date Apr 25, 2026

Exploit Status Not Found

Score 7.7 CVSS v4.0

Exploit Probability (EPSS)

4.06%

Vulnerability Summary

CVE-2026-41266: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, /api/v1/public-chatbotConfig/:id ep exposes sensitive data including API keys, HTTP authorization headers and internal configuration without any authentication. An attacker with knowledge just of a chatflow UUID can retrieve credentials stored in password type fields and HTTP headers, leading to credential theft and more. This vulnerability is fixed in 3.1.0.

Impacted Vendors

flowiseai 1

Reference Links

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-4jpm-cgx2-8h37

CVSS v4.0

Source Entity [email protected]

Severity HIGH

7.7

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW VECTOR

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1