CVE-2026-26862
8.3
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Exploitability: 2.8 / Impact: 5.5
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
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
Affected (1)
Products: Clevertap: Clevertap Web Sdk
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Up to 1.15.2 |
Related CWEs
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CWE-829
Inclusion of Functionality from Untrusted Control Sphere
The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.
References (3)
Source: cve@mitre.org
Product
Source: cve@mitre.org
ExploitIssue TrackingVendor Advisory
Timeline
No history available yet.