| Package | Affected versions | Patched versions |
|---|---|---|
| clevertap web sdk | ≤ 1.15.2 | |
| clevertap-web-sdk | < 1.15.3 | 1.15.3 |
CleverTap Web SDK version 1.15.2 and earlier is vulnerable to DOM-based Cross-Site Scripting (XSS) via window.postMessage in the Visual Builder module. The origin validation in src/modules/visualBuilder/pageBuilder.js (lines 56-60) uses the includes() method to verify the originUrl contains "dashboard.clevertap.com", which can be bypassed by an attacker using a crafted subdomain.
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