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CVE-2026-76059— Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

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.

在 IBM Langflow OSS 1.0.0 到 1.11.5 版本中，能够提交自定义组件源码的攻击者可以通过构造一个带有注释的类体赋值语句来绕过静态安全扫描器，该语句通过别名追踪机制解析为一个危险的可调用对象（callable）；由于存在逻辑错误，解析后的值从未与危险可调用对象黑名单进行比对。如果该构造的组件进入运行时执行路径，攻击者即可在服务器进程内以运行服务所具有的权限执行任意的操作系统命令。

CVSS 8.8 · High
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I. Basic Information for CVE-2026-76059

Vulnerability Information
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Vulnerability Title
Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Langflow OSS 1.0.0 through 1.11.5 An attacker who could submit custom component source code could bypass the static security scanner by crafting an annotated class-body assignment that resolved to a dangerous callable through alias tracking; the resolved value was never checked against the dangerous callable blocklist due to the logic error. If the crafted component reached the runtime execution path, the attacker could cause arbitrary operating system commands to execute on the server in-process, with the privileges of the running service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM Langflow OSS 1.0.0 ~ 1.11.5 cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-76059

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III. Intelligence Information for CVE-2026-76059

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Other References for CVE-2026-76059 (1)

Same Patch Batch · IBM · 2026-09-10 · 49 CVEs total

CVE-2026-81204 9.8 CRITICAL Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-78573 9.8 CRITICAL IBM ContextForge MCP Gateway is affected by use of default credentials
CVE-2026-85025 9.8 CRITICAL Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-79724 9.8 CRITICAL Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-82100 9.6 CRITICAL DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-82107 9.6 CRITICAL DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-19646 9.1 CRITICAL Multiple vulnerabilities affect IBM License Key Server Administration and Reporting Tool a
CVE-2026-80424 9.1 CRITICAL DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-78571 8.8 HIGH Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-82097 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-81211 8.8 HIGH Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-81941 8.8 HIGH Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-82099 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-82098 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-81550 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-81551 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-81554 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-81940 8.8 HIGH Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-82092 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-82095 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities due to open source software

Showing top 20 of 49 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Langflow OSS
Same vendor: IBM
Same weakness: CWE-693

V. Comments for CVE-2026-76059

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