CVE-2026-26861

The CleverTap Web SDK (version 1.15.2 and earlier ) is vulnerable to Cross-Site Scripting (XSS) via the window.postMessage interface. The root cause is located in the handleCustomHtmlPreviewPostMessageEvent function within src/util/campaignRender/nativeDisplay.js, which performs insufficient orig...

CVE-2026-26862

The CleverTap Web SDK version 1.15.2 and earlier is vulnerable to DOM-based Cross-Site Scripting (XSS) within the Visual Builder module. The root cause is improper origin validation in src/modules/visualBuilder/pageBuilder.js (lines 56-60), where the includes() method is used to verify if the ori...