Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-73603— Flowise before 3.1.4 Credential Abuse via Text-to-Speech

Quick assessment

Affected
FlowiseAI Flowise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FlowiseAI Flowise是FlowiseAI公司开源的一款可视化编排语言模型应用流程的工具。 FlowiseAI Flowise 3.1.4之前版本存在授权问题漏洞，该漏洞源于未验证chatflow可见性，可能导致未经身份验证的攻击者滥用私有chatflow TTS凭据，利用存储的OpenAI或ElevenLabs API密钥生成无限文本转语音音频，造成账户费用损失。

CVSS 6.3 · Medium EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
FlowiseAI Flowise < 3.1.4 affected
3.1.4 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-73603

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Flowise before 3.1.4 Credential Abuse via Text-to-Speech
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
FlowiseAI Flowise 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FlowiseAI Flowise是FlowiseAI公司开源的一款可视化编排语言模型应用流程的工具。 FlowiseAI Flowise 3.1.4之前版本存在授权问题漏洞，该漏洞源于未验证chatflow可见性，可能导致未经身份验证的攻击者滥用私有chatflow TTS凭据，利用存储的OpenAI或ElevenLabs API密钥生成无限文本转语音音频，造成账户费用损失。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FlowiseAI Flowise 0 ~ 3.1.4 -

II. Public POCs for CVE-2026-73603

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-73603

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-73603 (2)

Same Patch Batch · FlowiseAI · 2026-08-13 · 10 CVEs total

CVE-2026-73483 9.4 CRITICAL Flowise before 3.1.3 Sandbox Escape via Puppeteer
CVE-2026-73487 9.0 CRITICAL Flowise before 3.1.3 Prompt Injection RCE via CSV Agent
CVE-2026-73485 9.0 CRITICAL Flowise before 3.1.3 Remote Code Execution via Airtable Agent
CVE-2026-73601 9.0 CRITICAL Flowise before 3.1.3 Remote Code Execution via Custom MCP
CVE-2026-73486 9.0 CRITICAL Flowise before 3.1.3 Code Injection via CSV Agent customReadCSV
CVE-2026-73602 9.0 CRITICAL Flowise before 3.1.3 Sandbox Escape to RCE
CVE-2026-73484 8.6 HIGH Flowise before 3.1.3 Sandbox Escape via Pandas Methods
CVE-2026-73604 6.5 MEDIUM Flowise before 3.1.3 Credential Exposure via API
CVE-2026-73488 6.0 MEDIUM Flowise before 3.1.3 IDOR via customer-default-source endpoint

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: FlowiseAI
Same weakness: CWE-862

V. Comments for CVE-2026-73603

No comments yet

Leave a comment