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CVE-2025-34281

20
FAUCET Score

CVE-2025-34281 is a Stored Cross-Site Scripting (XSS) vulnerability affecting ThingsBoard versions prior to v4.2.1. An authenticated user can upload malicious SVG images to the "Image Gallery," which, when accessed via the public API or embedded in a widget, executes JavaScript in the victim's browser. This medium-severity vulnerability (CVSS 5.4) allows for potential session compromise and unauthorized actions due to insufficient restriction of JavaScript execution in the ImageController. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.2.1CPE matchmatch criteria
cpe:2.3:a:thingsboard:thingsboard:*:*:*:*:*:*:*:*
>= 0, < 4.2.1CPE match
cpe:2.3:a:thingsboard:thingsboard:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.2MEDIUM

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
HIGH
SS Integrity
LOW
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 41st percentile among its peer group of 15,225 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: org.thingsboard:applicationFixed in: 4.2.1

Vendor Advisories (1)

mavenGHSA-fpq4-r87v-g246medium

ThingsBoard vulnerable to stored cross-site scripting (XSS) vulnerability in the dashboard's Image Upload Gallery feature

Oct 17, 2025

References

advisory.checkmarx.net / advisory/CVE-2025-34281
github.com / thingsboard/thingsboard/commit/b2ae6f92d12206ea185a2e882945a6b69234bf03
github.com / thingsboard/thingsboard/releases/tag/v4.2.1
Release Notes