cvedb.io
CVE-2026-26862
HIGH · CVSS 8.3
EPSS exploitation probability: 0%
Published 2026-02-27T18:16:12.163 · Last modified 2026-06-17T10:26:22.113

Summary

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

Affected products

clevertap — clevertap_web_sdk

Does this affect you?

Add your gear to cvedb and we'll alert you only when clevertap ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.