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CVE-2026-10547— Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement

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公司的一款可视化构建AI工作流的低代码工具平台。 IBM Langflow OSS 1.0.0版本至1.10.3版本存在权限许可和访问控制问题漏洞，该漏洞源于未正确验证已弃用的POST /api/v1/build/{flow_id}/vertices端点中的所有权，允许经过身份验证的用户将任意图形数据注入任意流的共享缓存，可能导致跨用户缓存污染、未经授权的工作流执行或拒绝服务。

CVSS 5.9 · Medium EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
IBM Langflow OSS 1.0.0≤ 1.10.3 affected
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I. Basic Information for CVE-2026-10547

Vulnerability Information
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Vulnerability Title
Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST /api/v1/build/{flow_id}/vertices endpoint, allowing an authenticated user to inject arbitrary graph data into a shared cache for any flow. This may result in cross-user cache pollution, unauthorized workflow execution, or denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
IBM Langflow OSS 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM Langflow OSS是美国IBM公司的一款可视化构建AI工作流的低代码工具平台。 IBM Langflow OSS 1.0.0版本至1.10.3版本存在权限许可和访问控制问题漏洞，该漏洞源于未正确验证已弃用的POST /api/v1/build/{flow_id}/vertices端点中的所有权，允许经过身份验证的用户将任意图形数据注入任意流的共享缓存，可能导致跨用户缓存污染、未经授权的工作流执行或拒绝服务。
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 ~ 1.10.3 cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-10547

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III. Intelligence Information for CVE-2026-10547

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Vendor Advisories for CVE-2026-10547 (1)

Same Patch Batch · IBM · 2026-08-05 · 32 CVEs total

CVE-2026-8478 8.8 HIGH Langflow OSS is affected by arbitrary code execution in component generation, validation,
CVE-2026-9201 8.8 HIGH Langflow OSS is affected by arbitrary code execution in component generation, validation,
CVE-2026-17623 8.8 HIGH Langflow is affected OS Command Injection in Model Context Protocol features
CVE-2026-17626 8.8 HIGH Langflow is affected by security vulnerabilities in Model Context Protocol features
CVE-2026-17632 8.8 HIGH Langflow OSS is affected by arbitrary code execution in component generation, validation,
CVE-2026-8182 8.8 HIGH Langflow OSS is affected by arbitrary code execution in component generation, validation,
CVE-2026-17624 8.5 HIGH Langflow OSS is affected by arbitrary code execution in component generation, validation,
CVE-2026-9077 8.5 HIGH Reliance on Untrusted Inputs in a Security Decision vulnerabilities in Model Context Proto
CVE-2026-17617 8.5 HIGH Server-Side Request Forgery (SSRF) in IBM Application Gateway Operator
CVE-2026-17633 8.5 HIGH Langflow OSS is affected by arbitrary code execution in component generation, validation,
CVE-2026-10025 8.2 HIGH IBM QRadar SIEM has an XML External Entity (XXE) injection vulnerability
CVE-2026-9196 8.1 HIGH Langflow OSS is affected by arbitrary code execution in component generation, validation,
CVE-2026-8400 8.1 HIGH Multiple Vulnerabilities in IBM® Java SDK affect IBM WebSphere Application Server and WebS
CVE-2026-8183 7.7 HIGH Langflow OSS is affected by arbitrary code execution in custom component validation and tr
CVE-2026-8446 7.5 HIGH Langflow is affected by security vulnerabilities in Model Context Protocol features
CVE-2026-9205 7.4 HIGH Langflow is affected by weaknesses in secret handling and sensitive configuration access
CVE-2026-8470 7.4 HIGH Langflow is affected by weaknesses in secret handling and sensitive configuration access
CVE-2026-17630 7.2 HIGH Langflow is affected by security vulnerabilities in Model Context Protocol features
CVE-2026-17625 7.2 HIGH Langflow is affected by OS Command Injection in Model Context Protocol features
CVE-2026-9081 7.1 HIGH Langflow OSS is affected by server-side request forgery in provider validation and API req

Showing top 20 of 32 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Langflow OSS
Same vendor: IBM
Same weakness: CWE-284

V. Comments for CVE-2026-10547

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