CVE-2026-51888
Quick assessment
Affected
n/a n/a
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.
langflow-ai langflow 1.8.4 版本存在目录遍历漏洞。该漏洞的影响为：攻击者能够在预期工作空间或存储边界之外任意写入文件。受影响的组件为： 中的 （即通过 HTTP POST 请求创建知识库的接口）。攻击向量为：攻击面包括通过 HTTP 或浏览器支持的公共服务路径。一个面向公网的文件上传或 HTTP 路由处理程序，会将攻击者控制的路径或文件名直接用于主机文件创建，而未实施任何可见的边界限制。¶¶ 在 langflow-ai langflow 1.8.4 及更早版本中发现了一个安全弱点。lang
Possible ATT&CK Techniques 2 AI
T1041 · Exfiltration Over C2 Channel T1083 · File and Directory Discovery
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I. Basic Information for CVE-2026-51888
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
langflow-ai langflow v1.8.4 is affected by: Directory Traversal. The impact is: Arbitrary file write outside the intended workspace or storage boundary.. The component is: src/backend/base/langflow/api/v1/knowledge_bases.py:knowledge_bases-create_knowledge_base-a-live-http-post-to-create-knowledge-base. The attack vector is: Attack surface: HTTP or browser-backed service path. A public-facing upload or HTTP route handler forwards an attacker-controlled path or filename into host file creation without any visible boundary enforcement. ¶¶ A weakness has been identified in langflow-ai langflow up to 1.8.4. langflow contains an absolute path traversal vulnerability in knowledge_bases-create_knowledge_base-a-live-http-post-to-create-knowledge-base (src/backend/base/langflow/api/v1/knowledge_bases.py:51). An attacker can write or overwrite files outside the intended working directory by providing absolute paths in the knowledge base creation endpoint.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2026-51888
| # | POC Description | Source Link | Shenlong Link |
|---|
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Proof of Concept for CVE-2026-51888 (1)
Same Patch Batch · n/a · 2026-10-01 · 21 CVEs total
| CVE-2026-103484 | 8.8 HIGH | pgvector buffer overflow in IVFFlat index build |
| CVE-2026-103531 | 5.5 MEDIUM | OpenSC card-setcos.c setcos_construct_fci_44 stack-based overflow |
| CVE-2026-51876 | DeepTutor 1.4.0授权绕过漏洞 | |
| CVE-2026-51875 | Devika v1.0存在路径遍历漏洞 | |
| CVE-2026-51892 | RagFlow 0.24.0 /v1/document/get/ 接口访问控制错误漏洞 | |
| CVE-2026-51896 | RagFlow 0.25.3恢复模块越权访问漏洞 | |
| CVE-2026-51882 | Langchain-Chatchat 0.3.0 文件上传路径穿越漏洞 | |
| CVE-2026-51886 | LangFlow v1.9.3代码注入漏洞 | |
| CVE-2026-51878 | DeepTutor 1.4.0 对象标识符授权绕过漏洞 | |
| CVE-2026-51873 | Devika v1.0目录遍历漏洞 | |
| CVE-2026-51881 | DeepTutor 1.4.0远程代码注入漏洞 | |
| CVE-2026-51879 | DeepTutor 1.4.0 认证绕过漏洞 | |
| CVE-2026-51897 | RAGFlow 0.24.0 get_dataset接口存在命令执行漏洞 | |
| CVE-2026-51884 | Langchain Chatchat 0.3.1临时文档上传路径遍历漏洞 | |
| CVE-2026-51893 | RagFlow 0.24.0 越权访问漏洞 | |
| CVE-2026-51880 | Deeptutor 1.4.0 EditFileTool路径遍历漏洞 | |
| CVE-2026-51895 | Ragflow 0.24.0及之前版本存在更新元数据不当访问控制漏洞 | |
| CVE-2026-51874 | Devika v1.0路径穿越漏洞 | |
| CVE-2026-51894 | RAGFlow 0.24.0 任意文件读取漏洞 | |
| CVE-2026-51883 | Langchain-Chatchat 0.3.x 知识库创建接口路径穿越漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-51888
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