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CVE-2026-33484— Langflow has Unauthenticated IDOR on Image Downloads

Quick assessment

Affected
langflow-ai langflow
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.

Langflow是Langflow开源的一个用于构建多代理和 RAG 应用程序的可视化框架。 Langflow 1.0.0版本至1.8.1版本存在安全漏洞，该漏洞源于/api/v1/files/images/{flow_id}/{file_name}端点缺少身份验证或所有权检查，可能导致未经授权下载用户图像。

CVSS 7.5 · High EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2026-33484

Vulnerability Information
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Vulnerability Title
Langflow has Unauthenticated IDOR on Image Downloads
Source: CVE Program / CVE List V5
Vulnerability Description
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions 1.0.0 through 1.8.1, the `/api/v1/files/images/{flow_id}/{file_name}` endpoint serves image files without any authentication or ownership check. Any unauthenticated request with a known flow_id and file_name returns the image with HTTP 200. In a multi-tenant deployment, any attacker who can discover or guess a `flow_id` (UUIDs can be leaked through other API responses) can download any user's uploaded images without credentials. Version 1.9.0 contains a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Langflow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Langflow是Langflow开源的一个用于构建多代理和 RAG 应用程序的可视化框架。 Langflow 1.0.0版本至1.8.1版本存在安全漏洞，该漏洞源于/api/v1/files/images/{flow_id}/{file_name}端点缺少身份验证或所有权检查，可能导致未经授权下载用户图像。
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
langflow-ai langflow >= 1.0.0, < 1.9.0 -

II. Public POCs for CVE-2026-33484

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III. Intelligence Information for CVE-2026-33484

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Vendor Advisories for CVE-2026-33484 (1)

Same Patch Batch · langflow-ai · 2026-03-24 · 4 CVEs total

CVE-2026-33309 10.0 CRITICAL Langflow has an Arbitrary File Write (RCE) via v2 API
CVE-2026-33475 9.1 CRITICAL Langflow GitHub Actions Shell Injection
CVE-2026-33497 Langflow: /profile_pictures/{folder_name}/{file_name} endpoint file reading

IV. Related Vulnerabilities

Same product: langflow
Same vendor: langflow-ai
Same weakness: CWE-284

V. Comments for CVE-2026-33484

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