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CVE-2026-3345— Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint

CVSS 6.5 · Medium EPSS 0.37% · P31

Possible ATT&CK Techniques 1AI

T1083 · File and Directory Discovery

Affected Version Matrix 1

VendorProductVersion RangeStatus
IBMLangflow Desktop≤ 1.8.4affected
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I. Basic Information for CVE-2026-3345

Vulnerability Information
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Vulnerability Title
Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
IBM Langflow Desktop 路径遍历漏洞
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 1.8.4及之前版本存在路径遍历漏洞，该漏洞源于目录遍历，可能导致远程攻击者通过特制URL请求查看任意文件。
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

VendorProductAffected VersionsCPESubscribe
IBMLangflow Desktop 0 ~ 1.8.4 cpe:2.3:a:ibm:langflow_desktop:1.8.4:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-3345

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III. Intelligence Information for CVE-2026-3345

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Vendor Advisories for CVE-2026-3345 (1)

Same Patch Batch · IBM · 2026-04-30 · 14 CVEs total

CVE-2026-63898.8 HIGHIBM Turbonomic Prometurbo agent used by IBM Turbonomic Application Resource Management is
CVE-2026-65438.8 HIGHAuthenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint
CVE-2026-45037.5 HIGHUnauthenticated Insecure Direct Object Reference (IDOR) Vulnerability in Langflow Desktop
CVE-2026-15776.5 MEDIUMIBM® Db2® is vulnerable to a denial of service with a specially crafted query involving mu
CVE-2025-361226.5 MEDIUMIBM® Db2® is vulnerable to a denial of service with a specially crafted query when stmthea
CVE-2026-65426.5 MEDIUMMonitor API allows cross-user read of transaction logs and deletion of build data via flow
CVE-2026-33406.5 MEDIUMServer-Side Request Forgery (SSRF) in Langflow URL Component
CVE-2026-45026.5 MEDIUMArbitrary File Write and Remote Code Execution Vulnerability in Langflow v2 API
CVE-2026-23116.4 MEDIUMIBM i is affected by a privilege escalation vulnerability in Web Administration GUI []
CVE-2026-33466.4 MEDIUMStored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw
CVE-2025-363356.2 MEDIUMVulnerabilities found
CVE-2025-146885.3 MEDIUMIBM® Db2® is vulnerable to a denial of service when fetching from certain tables under spe
CVE-2025-361805.3 MEDIUMInadequate Pod Communication Restrictions, affects watsonx.data

IV. Related Vulnerabilities

Same product: Langflow Desktop
Same vendor: IBM
Same weakness: CWE-22

V. Comments for CVE-2026-3345

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