CVE-2026-1009
MEDIUM EPSS 11.6%
Published Jan 15, 20265mo ago · Modified Jun 17, 20261w ago
5.4 CVSS 3.1
Published Jan 15, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago
Description
A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input sanitization in forum post content. An authenticated attacker can inject arbitrary JavaScript into forum posts, which is stored and executed when other users view the affected post. Successful exploitation allows the attacker’s payload to execute in the context of the victim’s authenticated Altium 365 session, enabling unauthorized access to workspace data, including design files and workspace settings. Exploitation requires user interaction to view a malicious forum post.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
11.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-284
CWE-79 Cross-site Scripting Injection
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| altium | altium_live | 1.2.2 | any |
References 1
- altium.com https://www.altium.com/platform/security-compliance/security-advisories
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.