CVE-2026-73603: flowise before 3.1.4 (exclusive); +1 more affected products

CVE-2026-73603. CVSS 3.1 base score 5.3 (MEDIUM, NVD). EPSS 0.00329 (percentile 0.24815), scored 22-Oct-2026.

Affected technology

flowise · before 3.1.4 (exclusive)
flowiseai

Flowise · 0 to before 3.1.4
FlowiseAI

Description’s affected range: before 3.1.4 fails to validate chatflow visibility in the unauthenticated text-to-speech endpoint

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Unauthenticated attackers can generate unlimited text-to-speech audio using stored OpenAI or ElevenLabs API keys by providing a valid chatflow UUID, incurring costs on the chatflow owner's account. Vendor/CNA’s CVSS 4.0 assessment (base score 6.3/10) rates confidentiality impact as none; integrity and availability impact as low.

Published 24-Oct-2026 01:44 UTC

CWE: CWE-862
CCR priority: 21.3 /100 (P4)
CVSS 3.1: 5.3 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N · NVD
EPSS: 0.00329 · percentile 0.24815 · 2026-10-22
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-73603.html