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CVE-2026-26862

HIGH SEVERITY

CVSS Score & Metrics

Base Score
8.3 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

Vulnerability Description

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

Vulnerability Details

Published Date
Last Modified
CWE ID
CWE-79
Source
NVD
Vendor
npm
Product
clevertap-web-sdk

External References

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