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CVE-2026-13448— Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

Quick assessment

Affected
IBM Langflow OSS
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.

IBM Langflow OSS是美国IBM公司的一个开源的低代码可视化AI工作流构建工具，它让开发者能通过拖拽组件的方式快速搭建、部署和迭代AI智能体与RAG应用，同时支持用Python进行深度定制以集成企业系统。 IBM Langflow OSS 1.0.0至1.10.1版本存在安全漏洞，该漏洞源于validate_public_flow_no_code_execution()函数不完整的黑名单未能阻止多个代码执行agent组件，可能导致未经验证的攻击者在公共流程构建端点实现远程代码执行。

CVSS 8.1 · High EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
IBM Langflow OSS 1.0.0≤ 1.10.1 affected
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I. Basic Information for CVE-2026-13448

Vulnerability Information
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Vulnerability Title
Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Langflow OSS 1.0.0 through 1.10.1 Lanflow OSS contains an unauthenticated remote code execution vulnerability in the public flow build endpoint ( /api/v1/build_public_tmp/{flow_id}/flow ). The vulnerability stems from an incomplete denylist in the validate_public_flow_no_code_execution() function that fails to block several code-execution agent components including OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
IBM Langflow OSS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM Langflow OSS是美国IBM公司的一个开源的低代码可视化AI工作流构建工具，它让开发者能通过拖拽组件的方式快速搭建、部署和迭代AI智能体与RAG应用，同时支持用Python进行深度定制以集成企业系统。 IBM Langflow OSS 1.0.0至1.10.1版本存在安全漏洞，该漏洞源于validate_public_flow_no_code_execution()函数不完整的黑名单未能阻止多个代码执行agent组件，可能导致未经验证的攻击者在公共流程构建端点实现远程代码执行。
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
IBM Langflow OSS 1.0.0 ~ 1.10.1 cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-13448

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III. Intelligence Information for CVE-2026-13448

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Vendor Advisories for CVE-2026-13448 (1)

Same Patch Batch · IBM · 2026-07-17 · 34 CVEs total

CVE-2026-8476 9.9 CRITICAL Disk Cache Deserialization Remote Code Execution Vulnerability
CVE-2026-8481 9.9 CRITICAL Remote Code Execution via Code Validation Endpoint
CVE-2026-8635 9.9 CRITICAL Arbitrary Code Execution in Python Interpreter Component
CVE-2026-8859 9.9 CRITICAL Path Traversal in APIRequest Component via Content-Disposition Header
CVE-2026-9135 9.9 CRITICAL Policies Component Dynamic CodeInput Fields Bypass Custom Component Validation
CVE-2026-13446 9.8 CRITICAL Langflow is affected by remote code execution, denial of service, path traversal, and expo
CVE-2026-8505 9.8 CRITICAL Authentication Bypass in Webhook Endpoints Allowed Unauthorized Flow Execution
CVE-2026-9103 9.8 CRITICAL Unauthenticated Superuser Token Issuance via Auto-Login Endpoint
CVE-2026-9198 9.8 CRITICAL Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation
CVE-2026-9202 9.8 CRITICAL Unauthenticated User Registration Could Lead to Remote Code Execution
CVE-2026-15091 9.3 CRITICAL Multiple Vulnerabilities in IBM Engineering AI hub.
CVE-2026-14499 8.8 HIGH Langflow is affected by remote code execution, denial of service, path traversal, and expo
CVE-2026-7667 8.8 HIGH Path Traversal Vulnerability in API Request Component Content-Disposition Header Processin
CVE-2026-8056 8.8 HIGH Parameter Injection Vulnerability in API Graph Execution Engine
CVE-2026-7755 8.8 HIGH MCP Server Configuration Validator Bypass via File Upload API
CVE-2026-13445 8.1 HIGH Langflow is affected by remote code execution, denial of service, path traversal, and expo
CVE-2026-13473 8.1 HIGH IBM Storage Protect Client is vulnerable to Heap-Based Buffer Overflow
CVE-2026-9762 7.8 HIGH IBM® Data Server driver for JDBC and SQLJ is vulnerable to remote code execution when jdbc
CVE-2026-7754 7.7 HIGH SSRF Protection Configuration Vulnerability
CVE-2026-7872 7.5 HIGH Path Traversal Vulnerability in File Component Leading to Arbitrary File Read and Authenti

Showing top 20 of 34 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Langflow OSS
Same vendor: IBM

V. Comments for CVE-2026-13448

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