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CVE-2026-7677— kerwincui FastBee System Notice SysNoticeController.java add cross site scripting

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及之前版本存在跨站脚本漏洞，该漏洞源于组件System Notice Handler中文件springboot/fastbee-admin/src/main/java/com/fastbee/web/controller/system/SysNoticeController.java的函数Add对参数noticeContent的操作，可能导致跨站脚本。

CVSS 3.5 · Low EPSS 0.33% · P25

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-2026-7677

Vulnerability Information
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Vulnerability Title
kerwincui FastBee System Notice SysNoticeController.java add cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in kerwincui FastBee up to 1.2.1. The impacted element is the function Add of the file springboot/fastbee-admin/src/main/java/com/fastbee/web/controller/system/SysNoticeController.java of the component System Notice Handler. This manipulation of the argument noticeContent causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. 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:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
FastBee 跨站脚本漏洞
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及之前版本存在跨站脚本漏洞，该漏洞源于组件System Notice Handler中文件springboot/fastbee-admin/src/main/java/com/fastbee/web/controller/system/SysNoticeController.java的函数Add对参数noticeContent的操作，可能导致跨站脚本。
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-2026-7677

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III. Intelligence Information for CVE-2026-7677

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Proof of Concept for CVE-2026-7677 (1)

IV. Related Vulnerabilities

Same product: FastBee
Same vendor: kerwincui
Same weakness: CWE-79

V. Comments for CVE-2026-7677

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