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TI-2026-00764 Aliases CVE-2026-1011GHSA-vrmv-j3x6-c7mm

Stored Cross-Site Scripting in Altium Live Support Center Comment Endpoint

Priority LOW 27CWE-116Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00285 21st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AltiumAltium Liveup to 1.1.1.39—No fix listedCNA
  • Altium Live VendorAltium Affected up to 1.1.1.39 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:altium:altium_live:*:*:*:*:*:*:*:*up to 1.1.1.39VulnerableAltium
  • cpe:2.3:a:altium:altium_live:*:*:*:*:*:*:*:* Versions up to 1.1.1.39 Vulnerable ·Altium

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-1011
  2. 2026-10-03 Alias added: GHSA-vrmv-j3x6-c7mm

References

Advisory 1

  • TI-2026-00762 Stored Cross-Site Scripting in Altium Live Forum Leading to Cross-Customer Data Exposure CVSS 3.1CRITICAL 9.0
  • TI-2026-00761 Stored Cross-Site Scripting in Altium Live User Profile Fields CVSS 3.1HIGH 7.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences