What is CVE-2026-124435?

CVE-2026-124435 is a medium-severity vulnerability in Openremote Core, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-11-08.

How severe is CVE-2026-124435?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Openremote Core

CVE-2026-124435

OpenRemote before 1.32.2 contains a stored cross-site scripting vulnerability that allows authenticated users with write:admin permissions to upload HTML or SVG files containing JavaScript via the Manager configuration file upload endpoint. Attackers can lure victims to the unauthenticated image retrieval endpoint, which serves files as text/html or image/svg+xml, executing scripts within the application's origin.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-11-08.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Openremote Core

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

GitHub Security Advisory (GHSA-vgp4-96p8-3w8v) (vendor-advisory)
VulnCheck Advisory: OpenRemote before 1.32.2 Stored XSS via Manager Configuration Image Upload (third-party-advisory)

Frequently asked questions

What is CVE-2026-124435?: CVE-2026-124435 is a medium-severity vulnerability in Openremote Core, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-11-08.
How severe is CVE-2026-124435?: Medium severity. CVSS v3 base score is 4.8 out of 10.