Flowise before 3.1.4 fails to validate chatflow visibility in the unauthenticated text-to-speech endpoint, allowing attackers to abuse private chatflow TTS credentials. 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.
History

Fri, 14 Aug 2026 23:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 13 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
Description Flowise before 3.1.4 fails to validate chatflow visibility in the unauthenticated text-to-speech endpoint, allowing attackers to abuse private chatflow TTS credentials. 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.
Title Flowise before 3.1.4 Credential Abuse via Text-to-Speech
First Time appeared Flowiseai
Flowiseai flowise
Weaknesses CWE-862
CPEs cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*
Vendors & Products Flowiseai
Flowiseai flowise
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-08-13T11:28:09.428Z

Updated: 2026-08-14T22:27:58.527Z

Reserved: 2026-08-13T11:15:12.096Z

Link: CVE-2026-73603

cve-icon Vulnrichment

Updated: 2026-08-14T22:27:53.830Z

cve-icon NVD

Status : Received

Published: 2026-08-13T12:17:24.617

Modified: 2026-08-14T23:16:33.600

Link: CVE-2026-73603

cve-icon Redhat

No data.