CVE-2025-3261

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:thingsboard:thingsboard:*:*:*:*:*:*:*:*

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/ - () https://advisory.checkmarx.net/advisory/CVE-2025-3261/ - Broken Link
References () https://github.com/thingsboard/thingsboard/commit/b2ae6f92d12206ea185a2e882945a6b69234bf03 - () https://github.com/thingsboard/thingsboard/commit/b2ae6f92d12206ea185a2e882945a6b69234bf03 - Patch
CPE cpe:2.3:a:thingsboard:thingsboard:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown
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')