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VULNERABILITIES

CVE-2026-73603 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-8gj2-2cvc-6xx7 CISA-ADPExploitMitigationVendor Advisory
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-8gj2-2cvc-6xx7 [email protected]ExploitMitigationVendor Advisory
https://www.vulncheck.com/advisories/flowise-before-credential-abuse-via-text-to-speech [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-862Missing Authorization[email protected]

Affected Products

ProductVersions
flowiseai flowise
< 3.1.4

CPE

  • cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-73603
NVD Published Date:
Aug 13, 2026
NVD Last Modified:
Sep 4, 2026
Source:
[email protected]
CVE-2026-73603 Details - Not Deferred