Description

A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests. The injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim’s browser context.

INFO

Published Date :

2026-01-15T23:08:01.260Z

Last Modified :

2026-01-22T01:39:11.948Z

Source :

Altium
AFFECTED PRODUCTS

The following products are affected by CVE-2026-1011 vulnerability.

Vendors Products
Altium
  • Altium 365
  • Altium Live
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-1011.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact