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CVE-2026-73602— Flowise before 3.1.3 Sandbox Escape to RCE

Quick assessment

Affected
FlowiseAI Flowise
Exploitation
Public or AI PoC available; prioritize validation
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 3.1.3之前版本存在代码注入漏洞，该漏洞源于vm2 JavaScript沙箱存在沙箱逃逸漏洞，攻击者可通过利用moment locale验证绕过，构造包含match函数的虚假String对象，绕过路径遍历检查，加载并执行文档存储中的恶意JavaScript文件，导致任意代码执行。

CVSS 9.0 · Critical EPSS 0.83% · P56

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 2

VendorProduct Version RangeStatus
FlowiseAI Flowise < 3.1.3 affected
3.1.3 unaffected
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I. Basic Information for CVE-2026-73602

Vulnerability Information
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Vulnerability Title
Flowise before 3.1.3 Sandbox Escape to RCE
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise before 3.1.3 contains a sandbox escape vulnerability in the vm2 JavaScript sandbox that allows authenticated users to execute arbitrary code by exploiting moment locale validation bypass. Attackers can craft a fake String object with a match function that bypasses path traversal checks to load and execute malicious JavaScript files stored in the document store outside the sandbox.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5
Vulnerability Title
FlowiseAI Flowise 代码注入漏洞
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 3.1.3之前版本存在代码注入漏洞，该漏洞源于vm2 JavaScript沙箱存在沙箱逃逸漏洞，攻击者可通过利用moment locale验证绕过，构造包含match函数的虚假String对象，绕过路径遍历检查，加载并执行文档存储中的恶意JavaScript文件，导致任意代码执行。
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 ~ 3.1.3 -

II. Public POCs for CVE-2026-73602

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8237 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-73602

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Patches & Fixes for CVE-2026-73602 (1)

Vendor Advisories for CVE-2026-73602 (1)

News Coverage for CVE-2026-73602 (1)

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-2026-73484 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-2026-73603 6.3 MEDIUM Flowise before 3.1.4 Credential Abuse via Text-to-Speech
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-95

V. Comments for CVE-2026-73602

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