{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:v2board:v2board:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.7.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0ca47622a50116d0ddd7ffb316b157afb57d25e8"
            }
          ],
          "repo": "https://github.com/v2board/v2board",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37503.json"
  },
  "details": "Cross-Site Scripting (XSS) in V2Board thru 1.7.4. The custom_html field in theme configuration is rendered using Blade unescaped output in public/theme/v2board/dashboard.blade.php. An admin can inject arbitrary JavaScript via the saveThemeConfig API. All site visitors execute the payload, enabling cookie theft, session hijacking, or phishing.",
  "id": "CVE-2026-37503",
  "modified": "2026-07-15T01:48:51.506191477Z",
  "published": "2026-05-01T00:00:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://gist.github.com/sgInnora/1330e1a82caa79906eec55eeff2c99b9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37503.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-37503"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/v2board/v2board"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AC:L/AV:N/A:N/C:H/I:L/PR:H/S:C/UI:R",
      "type": "CVSS_V3"
    }
  ]
}