CVE-2026-6543— Authenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint
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I. Basic Information for CVE-2026-6543
Vulnerability Information
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Vulnerability Title
Authenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow allows an attacker to execute arbitrary commands with the privileges of the process running Langflow. This allows reading sensitive environment variables (API keys, DB credentials), modifying files, or launching further attacks on the internal network.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
IBM Langflow Desktop 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM Langflow Desktop是美国国际商业机器（IBM）公司的一款AI流程编排桌面应用。 IBM Langflow Desktop 1.0.0至1.8.4版本存在代码注入漏洞，该漏洞源于允许攻击者以运行Langflow进程的权限执行任意命令，可能导致读取敏感环境变量、修改文件或发起进一步攻击。
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 Desktop | 1.0.0 ~ 1.8.4 | cpe:2.3:a:ibm:langflow_desktop:1.0.0:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-6543
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|---|
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Same Patch Batch · IBM · 2026-04-30 · 14 CVEs total
| CVE-2026-6389 | 8.8 HIGH | IBM Turbonomic Prometurbo agent used by IBM Turbonomic Application Resource Management is |
| CVE-2026-4503 | 7.5 HIGH | Unauthenticated Insecure Direct Object Reference (IDOR) Vulnerability in Langflow Desktop |
| CVE-2026-1577 | 6.5 MEDIUM | IBM® Db2® is vulnerable to a denial of service with a specially crafted query involving mu |
| CVE-2025-36122 | 6.5 MEDIUM | IBM® Db2® is vulnerable to a denial of service with a specially crafted query when stmthea |
| CVE-2026-6542 | 6.5 MEDIUM | Monitor API allows cross-user read of transaction logs and deletion of build data via flow |
| CVE-2026-3345 | 6.5 MEDIUM | Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File |
| CVE-2026-3340 | 6.5 MEDIUM | Server-Side Request Forgery (SSRF) in Langflow URL Component |
| CVE-2026-4502 | 6.5 MEDIUM | Arbitrary File Write and Remote Code Execution Vulnerability in Langflow v2 API |
| CVE-2026-2311 | 6.4 MEDIUM | IBM i is affected by a privilege escalation vulnerability in Web Administration GUI [] |
| CVE-2026-3346 | 6.4 MEDIUM | Stored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw |
| CVE-2025-36335 | 6.2 MEDIUM | Vulnerabilities found |
| CVE-2025-14688 | 5.3 MEDIUM | IBM® Db2® is vulnerable to a denial of service when fetching from certain tables under spe |
| CVE-2025-36180 | 5.3 MEDIUM | Inadequate Pod Communication Restrictions, affects watsonx.data |
IV. Related Vulnerabilities
Same product: Langflow Desktop
- CVE-2026-3345
Path Traversal and Arbitrary File Write Vulnerability in IBM - CVE-2026-3346
Stored Cross-Site Scripting (XSS) in Langflow Markdown Rende - CVE-2026-3340
Server-Side Request Forgery (SSRF) in Langflow URL Component - CVE-2026-4502
Arbitrary File Write and Remote Code Execution Vulnerability - CVE-2026-4503
Unauthenticated Insecure Direct Object Reference (IDOR) Vuln
Same vendor: IBM
- CVE-2026-1577
IBM® Db2® is vulnerable to a denial of service with a specia - CVE-2025-36122
IBM® Db2® is vulnerable to a denial of service with a specia - CVE-2025-14688
IBM® Db2® is vulnerable to a denial of service when fetching - CVE-2026-2311
IBM i is affected by a privilege escalation vulnerability in - CVE-2025-36180
Inadequate Pod Communication Restrictions, affects watsonx.d
Same weakness: CWE-94
- CVE-2021-47939
Evolution CMS 3.1.6 Authenticated Remote Code Execution via - CVE-2021-47938
ImpressCMS 1.4.2 Remote Code Execution via Autotasks - CVE-2021-47935
Sentry 8.2.0 Remote Code Execution via Pickle Deserializatio - CVE-2022-50944
Aero CMS 0.0.1 PHP Code Injection via posts.php - CVE-2026-8211
codelibs Fess JSP File AdminDesignAction.java update code in
V. Comments for CVE-2026-6543
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