{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.15.2"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "4d2e60f4f975c39675642dfaa289332c6c04dc56"
            }
          ],
          "repo": "https://github.com/clevertap/clevertap-web-sdk",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "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",
  "id": "CVE-2026-26862",
  "modified": "2026-03-10T21:47:58.207104822Z",
  "published": "2026-02-27T18:16:12.163Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/CleverTap/clevertap-web-sdk/blob/cf1b65d/src/modules/visualBuilder/pageBuilder.js#L56-L60"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/CleverTap/clevertap-web-sdk/issues/442"
    },
    {
      "type": "FIX",
      "url": "https://github.com/CleverTap/clevertap-web-sdk/pull/417"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ]
}