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CVE-2026-33053— Langflow has Missing Ownership Verification in API Key Deletion (IDOR)

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 1.9.0之前版本存在安全漏洞，该漏洞源于delete_api_key_route端点未验证API密钥归属，可能导致任意API密钥删除。

AI Predicted 9.1 Difficulty: Easy EPSS 0.39% · P32
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I. Basic Information for CVE-2026-33053

Vulnerability Information
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Vulnerability Title
Langflow has Missing Ownership Verification in API Key Deletion (IDOR)
Source: CVE Program / CVE List V5
Vulnerability Description
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the delete_api_key_route() endpoint accepts an api_key_id path parameter and deletes it with only a generic authentication check (get_current_active_user dependency). However, the delete_api_key() CRUD function does NOT verify that the API key belongs to the current user before deletion.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
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 1.9.0之前版本存在安全漏洞，该漏洞源于delete_api_key_route端点未验证API密钥归属，可能导致任意API密钥删除。
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 < 1.9.0 -

II. Public POCs for CVE-2026-33053

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III. Intelligence Information for CVE-2026-33053

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Vendor Advisories for CVE-2026-33053 (1)

IV. Related Vulnerabilities

Same product: langflow
Same vendor: langflow-ai
Same weakness: CWE-639

V. Comments for CVE-2026-33053

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