CVE-2026-1011

6.1 mediumEPSS 0.3%

Medium (6.1) in altium altium live. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
CWEs: CWE-79, CWE-116
Published: 2026-01-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

altium:altium_live

References

https://www.altium.com/platform/security-compliance/security-advisories

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