Stored Cross-Site Scripting (XSS) in ThingsBoard_CVE-2025-3261

6.2 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2025-3261

Source Checkmarx

Published Nov 27, 2025 at 18:11

Affected Product

Vendor thingsboard

Product thingsboard

Affected Versions thingsboard thingsboard 0

CWE Classification

CWE-79

References

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    "published": "2025-11-27T18:11:32.357Z",
    "modified": "2025-11-27T18:11:32.357Z",
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