What is CVE-2025-34281?

CVE-2025-34281 is a medium-severity vulnerability in Thingsboard, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-10-17.

How severe is CVE-2025-34281?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Thingsboard

CVE-2025-34281

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…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (26.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Thingsboard — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

596c5446-0ce5-4ba2-aa66-48b3b757a647 (third-party-advisory)
596c5446-0ce5-4ba2-aa66-48b3b757a647 (patch)
596c5446-0ce5-4ba2-aa66-48b3b757a647 (release-notes, Release Notes)

Frequently asked questions

What is CVE-2025-34281?: CVE-2025-34281 is a medium-severity vulnerability in Thingsboard, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-10-17.
How severe is CVE-2025-34281?: Medium severity. CVSS v3 base score is 5.4 out of 10.