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CleverTap Web SDK is vulnerable to DOM-based Cross-Site Scripting (XSS) via window.postMessage

🗓️ 27 Feb 2026 18:31:06Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 9 Views

CleverTap Web SDK up to 1.15.2 is vulnerable to cross site scripting via postMessage in Visual Builder due to weak origin validation.

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01 Mar 2026 01:26Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.3
EPSS0.00366
SSVC
9