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CVE-2026-26862

PoC —
CVSS 3.1
8.3 high
EPSS
<1%p30
Published
()
Modified
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

Vendors
clevertap
Products
clevertap web sdk
Weakness
CWE-79, CWE-829
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
NVD CVE.org GitHub PoCs EPSS (0.4%)

In the news

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