CNVD-2026-31206
Vulnerability from cnvd - Published: 2026-08-07
VLAI
Title
IBM Langflow OSS路径遍历漏洞(CNVD-2026-31206)
Description
IBM Langflow OSS是美国IBM公司的一个开源的低代码可视化AI工作流构建工具,它让开发者能通过拖拽组件的方式快速搭建、部署和迭代AI智能体与RAG应用,同时支持用Python进行深度定制以集成企业系统。
IBM Langflow OSS存在路径遍历漏洞,该漏洞源于APIRequest组件输入验证不当,“Save to File”功能启用时,HTTP响应Content-Disposition头中提取的文件名在与临时目录路径连接之前未被清理,攻击者可利用该漏洞通过特制文件名值(例如../)将任意文件写入Langflow进程可访问的位置。
Severity
高
Patch Name
IBM Langflow OSS路径遍历漏洞(CNVD-2026-31206)的补丁
Patch Description
IBM Langflow OSS是美国IBM公司的一个开源的低代码可视化AI工作流构建工具,它让开发者能通过拖拽组件的方式快速搭建、部署和迭代AI智能体与RAG应用,同时支持用Python进行深度定制以集成企业系统。
IBM Langflow OSS存在路径遍历漏洞,该漏洞源于APIRequest组件输入验证不当,“Save to File”功能启用时,HTTP响应Content-Disposition头中提取的文件名在与临时目录路径连接之前未被清理,攻击者可利用该漏洞通过特制文件名值(例如../)将任意文件写入Langflow进程可访问的位置。目前,供应商发布了安全公告及相关补丁信息,修复了此漏洞。
Formal description
目前厂商已经发布了升级补丁以修复这个安全问题,请到厂商的主页下载: https://www.ibm.com/support/pages/node/7278924
Reference
https://www.ibm.com/support/pages/node/7278924
Impacted products
| Name | IBM Langflow OSS >=1.0.0,<=1.10.0 |
|---|
{
"cves": {
"cve": {
"cveNumber": "CVE-2026-8859",
"cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-8859"
}
},
"description": "IBM Langflow OSS\u662f\u7f8e\u56fdIBM\u516c\u53f8\u7684\u4e00\u4e2a\u5f00\u6e90\u7684\u4f4e\u4ee3\u7801\u53ef\u89c6\u5316AI\u5de5\u4f5c\u6d41\u6784\u5efa\u5de5\u5177\uff0c\u5b83\u8ba9\u5f00\u53d1\u8005\u80fd\u901a\u8fc7\u62d6\u62fd\u7ec4\u4ef6\u7684\u65b9\u5f0f\u5feb\u901f\u642d\u5efa\u3001\u90e8\u7f72\u548c\u8fed\u4ee3AI\u667a\u80fd\u4f53\u4e0eRAG\u5e94\u7528\uff0c\u540c\u65f6\u652f\u6301\u7528Python\u8fdb\u884c\u6df1\u5ea6\u5b9a\u5236\u4ee5\u96c6\u6210\u4f01\u4e1a\u7cfb\u7edf\u3002\n\nIBM Langflow OSS\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eAPIRequest\u7ec4\u4ef6\u8f93\u5165\u9a8c\u8bc1\u4e0d\u5f53\uff0c\u201cSave to File\u201d\u529f\u80fd\u542f\u7528\u65f6\uff0cHTTP\u54cd\u5e94Content-Disposition\u5934\u4e2d\u63d0\u53d6\u7684\u6587\u4ef6\u540d\u5728\u4e0e\u4e34\u65f6\u76ee\u5f55\u8def\u5f84\u8fde\u63a5\u4e4b\u524d\u672a\u88ab\u6e05\u7406\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u7279\u5236\u6587\u4ef6\u540d\u503c\uff08\u4f8b\u5982../\uff09\u5c06\u4efb\u610f\u6587\u4ef6\u5199\u5165Langflow\u8fdb\u7a0b\u53ef\u8bbf\u95ee\u7684\u4f4d\u7f6e\u3002",
"formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttps://www.ibm.com/support/pages/node/7278924",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2026-31206",
"openTime": "2026-08-07",
"patchDescription": "IBM Langflow OSS\u662f\u7f8e\u56fdIBM\u516c\u53f8\u7684\u4e00\u4e2a\u5f00\u6e90\u7684\u4f4e\u4ee3\u7801\u53ef\u89c6\u5316AI\u5de5\u4f5c\u6d41\u6784\u5efa\u5de5\u5177\uff0c\u5b83\u8ba9\u5f00\u53d1\u8005\u80fd\u901a\u8fc7\u62d6\u62fd\u7ec4\u4ef6\u7684\u65b9\u5f0f\u5feb\u901f\u642d\u5efa\u3001\u90e8\u7f72\u548c\u8fed\u4ee3AI\u667a\u80fd\u4f53\u4e0eRAG\u5e94\u7528\uff0c\u540c\u65f6\u652f\u6301\u7528Python\u8fdb\u884c\u6df1\u5ea6\u5b9a\u5236\u4ee5\u96c6\u6210\u4f01\u4e1a\u7cfb\u7edf\u3002\r\n\r\nIBM Langflow OSS\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eAPIRequest\u7ec4\u4ef6\u8f93\u5165\u9a8c\u8bc1\u4e0d\u5f53\uff0c\u201cSave to File\u201d\u529f\u80fd\u542f\u7528\u65f6\uff0cHTTP\u54cd\u5e94Content-Disposition\u5934\u4e2d\u63d0\u53d6\u7684\u6587\u4ef6\u540d\u5728\u4e0e\u4e34\u65f6\u76ee\u5f55\u8def\u5f84\u8fde\u63a5\u4e4b\u524d\u672a\u88ab\u6e05\u7406\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u7279\u5236\u6587\u4ef6\u540d\u503c\uff08\u4f8b\u5982../\uff09\u5c06\u4efb\u610f\u6587\u4ef6\u5199\u5165Langflow\u8fdb\u7a0b\u53ef\u8bbf\u95ee\u7684\u4f4d\u7f6e\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
"patchName": "IBM Langflow OSS\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff08CNVD-2026-31206\uff09\u7684\u8865\u4e01",
"products": {
"product": "IBM Langflow OSS \u003e=1.0.0\uff0c\u003c=1.10.0"
},
"referenceLink": "https://www.ibm.com/support/pages/node/7278924",
"serverity": "\u9ad8",
"submitTime": "2026-07-20",
"title": "IBM Langflow OSS\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff08CNVD-2026-31206\uff09"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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