CVE-2026-41279

HIGH

Flowise: Unauthenticated TTS endpoint accepts arbitrary credential IDs — enables API credit abuse via stored credentials

Title source: cna

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the text-to-speech generation endpoint (POST /api/v1/text-to-speech/generate) is whitelisted (no auth) and accepts a credentialId directly in the request body. When called without a chatflowId, the endpoint uses the provided credentialId to decrypt the stored credential (e.g., OpenAI or ElevenLabs API key) and generate speech. This vulnerability is fixed in 3.1.0.

References (1)

[X_Refsource_Confirm] https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5fw2-mwhh-9947

Scores

CVSS v4 8.2

EPSS 0.0005

EPSS Percentile 16.6%

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-639

Status published

Products (1)

FlowiseAI/Flowise < 3.1.0

Published Apr 23, 2026

Tracked Since Apr 24, 2026