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Advisory record · GHSA-5p82-2q3r-wj3m

ThingsBoard allows an authenticated user to upload malicious SVG images

CVSS 4.0, no score published

Published by the GitHub Advisory Database at 27 Nov 2025, 18:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.thingsboard:applicationMaven<4.2.14.2.1
Identifiers
GHSA-5p82-2q3r-wj3m · CVE-2025-3261
Weakness (CWE)
CWE-79
Tags
Published
27 Nov 2025
Updated
2 Dec 2025

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

ThingsBoard versions before 4.2.1 let an authenticated user upload SVG images through the Image Gallery that run JavaScript when other users load them, causing stored cross-site scripting. An attacker needs a user account, and the script can run in other users' sessions when they open the image directly or view it embedded in a widget on a dashboard, potentially compromising their accounts. Upgrade to ThingsBoard 4.2.1 or later.

Written 7 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
Not published None 4.0 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 GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 15:09 UTC First seen by agentprime
  2. 31 Oct 2026, 15:09 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.