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CVE-2026-19295— Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy 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公司的一个可视化搭建语言模型应用工作流的平台。 IBM Langflow OSS 1.0.0版本至1.11.1版本存在代码注入漏洞，该漏洞源于保存带有特制type字段值的flow并触发引用它的wrapper flow构建，允许经过身份验证的攻击者在服务器进程中执行任意操作系统命令，可能导致权限提升并绕过LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false策略控制。

CVSS 9.9 · Critical EPSS 3.00% · P87

Public Exploits 1

Metasploit · 1 langflow_auth_rce_cve_2026_19295.rb [exploit]

Affected Version Matrix 1

VendorProduct Version RangeStatus
IBM Langflow OSS 1.0.0≤ 1.11.1 affected
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I. Basic Information for CVE-2026-19295

Vulnerability Information
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Vulnerability Title
Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A: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
IBM Langflow OSS 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM Langflow OSS是美国IBM公司的一个可视化搭建语言模型应用工作流的平台。 IBM Langflow OSS 1.0.0版本至1.11.1版本存在代码注入漏洞，该漏洞源于保存带有特制type字段值的flow并触发引用它的wrapper flow构建，允许经过身份验证的攻击者在服务器进程中执行任意操作系统命令，可能导致权限提升并绕过LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false策略控制。
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 ~ 1.11.1 cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19295

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III. Intelligence Information for CVE-2026-19295

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Vendor Pages for CVE-2026-19295 (1)

Same Patch Batch · IBM · 2026-08-28 · 16 CVEs total

CVE-2026-18527 9.9 CRITICAL IBM Application Runtime Expert (ARE) for IBM i is vulnerable to a user gaining elevated pr
CVE-2026-19286 9.8 CRITICAL Langflow is affected by multiple remote code execution vulnerabilities due to insufficient
CVE-2026-3627 9.1 CRITICAL Multiple Vulnerabilities in IBM Concert Software
CVE-2026-18729 8.8 HIGH Langflow is affected by multiple remote code execution vulnerabilities due to insufficient
CVE-2026-18904 8.2 HIGH Langflow is affected by multiple authentication bypass, path traversal, authorization, and
CVE-2026-18891 8.2 HIGH Langflow is affected by multiple authentication bypass, path traversal, authorization, and
CVE-2026-18899 7.5 HIGH Langflow is affected by multiple authentication bypass, path traversal, authorization, and
CVE-2026-17203 7.5 HIGH IBM Application Runtime Expert (ARE) for IBM i is vulnerable to a user gaining elevated pr
CVE-2026-16821 7.0 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-19294 6.4 MEDIUM Langflow is affected by multiple authentication bypass, path traversal, authorization, and
CVE-2026-3686 6.2 MEDIUM Vulnerabilities exists in IBM Cloud Pak for Data System
CVE-2025-64649 5.9 MEDIUM Multiple Vulnerabilities in IBM Concert Software
CVE-2025-36290 5.9 MEDIUM IBM Integrated Analytics System (IIAS) is affected by improper SSL/TLS certificate validat
CVE-2025-36271 5.9 MEDIUM IBM Integrated Analytics System (IIAS) is affected by a predictable salt vulnerability in
CVE-2026-18545 4.3 MEDIUM Langflow is affected by multiple authentication bypass, path traversal, authorization, and

IV. Related Vulnerabilities

Same product: Langflow OSS
Same vendor: IBM
Same weakness: CWE-95

V. Comments for CVE-2026-19295

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