CVE-2026-26862
8.3 · HIGHOverview
CVE-2026-26862 is a high-severity vulnerability affecting clevertap clevertap_web_sdk. It was published on February 27, 2026 and has a CVSS 3.1 base score of 8.3 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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
Remediation
Check the references section for vendor advisories and patches from clevertap. Update clevertap_web_sdk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| clevertap | clevertap_web_sdk | 0 | Affected |
Frequently Asked Questions
What is CVE-2026-26862?
CVE-2026-26862 is a high-severity vulnerability affecting clevertap clevertap_web_sdk. It was published on February 27, 2026 and has a CVSS 3.1 base score of 8.3 (HIGH).
How severe is CVE-2026-26862?
This vulnerability has a CVSS 3.1 base score of 8.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-26862?
Check the references section for vendor advisories and patches from clevertap. Update clevertap_web_sdk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-26862?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-26862 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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