En resumen
- CVE-2026-26861 es una vulnerabilidad ALTO (CVSS 8.3) que afecta a clevertap web sdk (clevertap), clevertap-web-sdk.
- Probabilidad de explotación en los próximos 30 días (EPSS): 0.21%, mayor que el 10.6% de las vulnerabilidades.
- Solución: actualizar a 1.15.3 o posterior.
Description
CleverTap Web SDK version 1.15.2 and earlier is vulnerable to Cross-site Scripting (XSS) via window.postMessage. The handleCustomHtmlPreviewPostMessageEvent function in src/util/campaignRender/nativeDisplay.js performs insufficient origin validation using the includes() method, which can be bypassed by an attacker using a subdomain.
NVD description
CleverTap Web SDK version 1.15.2 and earlier is vulnerable to Cross-Site Scripting (XSS) via window.postMessage. The handleCustomHtmlPreviewPostMessageEvent function in src/util/campaignRender/nativeDisplay.js performs insufficient origin validation using the includes() method, which can be bypassed by an attacker using a subdomain
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