{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.0.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "db6e0f3e7b81b97d87bc07f017ac0dd2122e1558"
            },
            {
              "fixed": "ce0f7c1aa358f2ea04632983398fde51d6e10a52"
            }
          ],
          "repo": "https://git.drupalcode.org/project/block_class",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "drupal",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3902.json"
  },
  "details": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Block Class allows Cross-Site Scripting (XSS).This issue affects Block Class: from 4.0.0 before 4.0.1.",
  "id": "CVE-2025-3902",
  "modified": "2026-08-12T03:51:47.000474296Z",
  "published": "2025-04-23T17:08:08.048Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.drupalcode.org/project/block_class"
    },
    {
      "type": "WEB",
      "url": "https://www.drupal.org/project/block_class"
    },
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2025-043"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3902.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3902"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Block Class - Moderately critical - Cross Site Scripting - SA-CONTRIB-2025-043"
}