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.
References
Configurations
History
03 Dec 2025, 13:53
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Thingsboard
Thingsboard thingsboard |
|
| References | () https://advisory.checkmarx.net/advisory/CVE-2025-3261/ - Broken Link | |
| References | () https://github.com/thingsboard/thingsboard/commit/b2ae6f92d12206ea185a2e882945a6b69234bf03 - Patch | |
| CPE | cpe:2.3:a:thingsboard:thingsboard:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.4 |
27 Nov 2025, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-11-27 18:15
Updated : 2025-12-03 13:53
NVD link : CVE-2025-3261
Mitre link : CVE-2025-3261
CVE.ORG link : CVE-2025-3261
JSON object : View
Products Affected
thingsboard
- thingsboard
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
