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.
History

Tue, 16 Dec 2025 11:30:00 +0000


Tue, 16 Dec 2025 11:15:00 +0000

Type Values Removed Values Added
Description ThingsBoard versions < 4.2.1 contain a stored cross-site scripting (XSS) vulnerability in the dashboard's Image Upload Gallery feature. An attacker can upload an SVG file containing malicious JavaScript, which may be executed when the file is rendered in the UI. This issue results from insufficient sanitization and improper content-type validation of uploaded SVG files. 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.
Title ThingsBoard < v4.2.1 SVG Image Stored XSS Stored Cross-Site Scripting (XSS) in ThingsBoard
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

cvssV4_0

{'score': 6.2, 'vector': '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'}


Fri, 24 Oct 2025 13:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:thingsboard:thingsboard:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}


Mon, 20 Oct 2025 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Thingsboard
Thingsboard thingsboard
Vendors & Products Thingsboard
Thingsboard thingsboard

Fri, 17 Oct 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 17 Oct 2025 18:45:00 +0000

Type Values Removed Values Added
Description ThingsBoard versions < 4.2.1 contain a stored cross-site scripting (XSS) vulnerability in the dashboard's Image Upload Gallery feature. An attacker can upload an SVG file containing malicious JavaScript, which may be executed when the file is rendered in the UI. This issue results from insufficient sanitization and improper content-type validation of uploaded SVG files.
Title ThingsBoard < v4.2.1 SVG Image Stored XSS
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2025-12-16T10:59:45.612Z

Reserved: 2025-04-15T19:15:22.581Z

Link: CVE-2025-34281

cve-icon Vulnrichment

Updated: 2025-10-17T18:59:48.159Z

cve-icon NVD

Status : Modified

Published: 2025-10-17T19:15:37.197

Modified: 2025-12-16T11:15:43.777

Link: CVE-2025-34281

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-10-20T13:21:53Z