CVE-2026-26862
CVE-2026-26862
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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
CVSS 8.3 · High · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
n/a
- Versions
- n/a: Affected
No fix published
clevertap-web-sdk npm
- Affected ranges
- SEMVER: < 1.15.3
Update to 1.15.3