CVE-2026-5027— Langflow - Path Traversal Arbitrary File Write via upload_user_file
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-5027
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Langflow - Path Traversal Arbitrary File Write via upload_user_file
Source: NVD (National Vulnerability Database)
Vulnerability Description
The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').
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
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Langflow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Langflow是Langflow开源的一个用于构建多代理和 RAG 应用程序的可视化框架。 Langflow存在安全漏洞，该漏洞源于端点POST /api/v2/files未清理multipart表单数据中的filename参数，可能导致攻击者通过路径遍历序列将文件写入文件系统的任意位置。
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 |
|---|---|---|---|---|
| langflow-ai | langflow | 0 | - |
II. Public POCs for CVE-2026-5027
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-5027
请登录查看更多情报信息。
Same Patch Batch · langflow-ai · 2026-03-27 · 6 CVEs total
| CVE-2026-5025 | 6.5 MEDIUM | Langflow - Application Logs Exposed to All Authenticated Users |
| CVE-2026-5022 | Langflow - Missing Authorization on download_image Endpoint | |
| CVE-2026-5026 | Langflow - Stored XSS via Malicious SVG Upload | |
| CVE-2026-34046 | Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership | |
| CVE-2026-33873 | Langflow has Authenticated Code Execution in Agentic Assistant Validation |
IV. Related Vulnerabilities
Same product: langflow
- CVE-2026-7700
langflow-ai langflow LambdaFilterComponent lambda_filter.p e - CVE-2026-7687
langflow-ai langflow Full Builtins code_parser.py CodeParser - CVE-2026-6600
langflow-ai langflow Frontend React Component Rendering edit - CVE-2026-6599
langflow-ai langflow Model Context Protocol Configuration AP - CVE-2026-6598
langflow-ai langflow Project Creation Endpoint projects.py e
Same vendor: langflow-ai
- CVE-2026-7700
langflow-ai langflow LambdaFilterComponent lambda_filter.p e - CVE-2026-7687
langflow-ai langflow Full Builtins code_parser.py CodeParser - CVE-2026-6600
langflow-ai langflow Frontend React Component Rendering edit - CVE-2026-6599
langflow-ai langflow Model Context Protocol Configuration AP - CVE-2026-6598
langflow-ai langflow Project Creation Endpoint projects.py e
Same weakness: CWE-22
- CVE-2026-8274
npitre cramfs-tools Directory cramfsck.c do_directory path t - CVE-2022-50956
WordPress Plugin amministrazione-aperta 3.7.3 Local File Rea - CVE-2026-8215
Industrial Application Software IAS Canias ERP RMI iasReques - CVE-2026-42605
AzuraCast: Path Traversal in `currentDirectory` Parameter En - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow
V. Comments for CVE-2026-5027
No comments yet