CVE-2026-73603

EUVD-2026-57807
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 23.52%
Affected Products (NVD)
VendorProductVersion
flowiseaiflowise
𝑥
< 3.1.4
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-8gj2-2cvc-6xx7
https://www.vulncheck.com/advisories/flowise-before-credential-abuse-via-text-to-speech
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-8gj2-2cvc-6xx7