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CVE-2025-34281— Stored Cross-Site Scripting (XSS) in ThingsBoard

Quick assessment

Affected
thingsboard thingsboard
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.

ThingsBoard是ThingsBoard团队的一个基于Java用于IOT设备进行监控、管理、数据收集的平台。 ThingsBoard 4.2.1之前版本存在安全漏洞，该漏洞源于对上传SVG文件的清理不足和内容类型验证不当，可能导致存储型跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.38% · P30
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I. Basic Information for CVE-2025-34281

Vulnerability Information
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Vulnerability Title
Stored Cross-Site Scripting (XSS) in ThingsBoard
Source: CVE Program / CVE List V5
Vulnerability Description
ThingsBoard in versions prior to v4.2.1 allows an authenticated user to upload malicious SVG images via the "Image Gallery", leading to a Stored Cross-Site Scripting (XSS) vulnerability. The exploit can be triggered when any user accesses the public API endpoint of the malicious SVG images, or if the malicious images are embedded in an `iframe` element, during a widget creation, deployed to any page of the platform (e.g., dashboards), and accessed during normal operations. The vulnerability resides in the `ImageController`, which fails to restrict the execution of JavaScript code when an image is loaded by the user's browser. This vulnerability can lead to the execution of malicious code in the context of other users' sessions, potentially compromising their accounts and allowing unauthorized actions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:L/SA: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
ThingsBoard 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ThingsBoard是ThingsBoard团队的一个基于Java用于IOT设备进行监控、管理、数据收集的平台。 ThingsBoard 4.2.1之前版本存在安全漏洞，该漏洞源于对上传SVG文件的清理不足和内容类型验证不当，可能导致存储型跨站脚本攻击。
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
thingsboard thingsboard 0 ~ 4.2.1 -

II. Public POCs for CVE-2025-34281

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III. Intelligence Information for CVE-2025-34281

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Patches & Fixes for CVE-2025-34281 (1)

IV. Related Vulnerabilities

Same product: thingsboard
Same vendor: thingsboard
Same weakness: CWE-79

V. Comments for CVE-2025-34281

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