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CVE-2026-7676— kerwincui FastBee Tool Download Endpoint ToolController.java ToolController.download path traversal

Quick assessment

Affected
kerwincui FastBee
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.

FastBee是中国FastBee开源的一个物联网平台。 FastBee 1.2.1及之前版本存在路径遍历漏洞，该漏洞源于组件Tool Download Endpoint中文件springboot/fastbee-open-api/src/main/java/com/fastbee/data/controller/ToolController.java的函数ToolController.download对参数fileName的操作，可能导致路径遍历。

CVSS 4.3 · Medium EPSS 0.52% · P43

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 2

VendorProduct Version RangeStatus
kerwincui FastBee 1.2.0 affected
1.2.1 affected
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I. Basic Information for CVE-2026-7676

Vulnerability Information
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Vulnerability Title
kerwincui FastBee Tool Download Endpoint ToolController.java ToolController.download path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in kerwincui FastBee up to 1.2.1. The affected element is the function ToolController.download of the file springboot/fastbee-open-api/src/main/java/com/fastbee/data/controller/ToolController.java of the component Tool Download Endpoint. The manipulation of the argument fileName results in path traversal. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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
FastBee 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FastBee是中国FastBee开源的一个物联网平台。 FastBee 1.2.1及之前版本存在路径遍历漏洞，该漏洞源于组件Tool Download Endpoint中文件springboot/fastbee-open-api/src/main/java/com/fastbee/data/controller/ToolController.java的函数ToolController.download对参数fileName的操作，可能导致路径遍历。
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
kerwincui FastBee 1.2.0 -

II. Public POCs for CVE-2026-7676

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III. Intelligence Information for CVE-2026-7676

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Other References for CVE-2026-7676 (1)

IV. Related Vulnerabilities

Same product: FastBee
Same vendor: kerwincui
Same weakness: CWE-22

V. Comments for CVE-2026-7676

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