CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
2DescriptionNVD
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.
AnalysisAI
Stored XSS in Altium Live's Support Center AddComment endpoint allows attackers to inject malicious JavaScript that persists and executes when support staff or other users view affected support cases. The vulnerability stems from inadequate server-side input validation that bypasses client-side HTML escaping, enabling attackers to compromise elevated-privilege support accounts through victim browser execution. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
Sign in for detailed remediation steps.
Share
External POC / Exploit Code
Leaving vuln.today