{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.0.8.5"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20a01ef08559ffdc97205edeecde86c8ea27e567"
            },
            {
              "fixed": "c8fef41ad8651d348050c513451755ab8882b97e"
            }
          ],
          "repo": "https://github.com/givanz/vvveb",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5cg7-phhv-4qjr"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-116",
      "CWE-185",
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54506.json"
  },
  "details": "Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.5, app/controller/user/profile.php accepts the user[bio] field and passes stored content through sanitizeHTML() in system/functions.php, whose on* event-handler regular expression omits the forward-slash delimiter and whose do-while condition compares the string to itself, so forbidden nested tags are removed only once. An Author-role or higher user can submit solidus-prefixed event-handler markup or nested forbidden tags that survive sanitization. The stored bio is rendered without sufficient output encoding on /author/{username}, in the admin user-management view, and potentially in comment displays, causing attacker-controlled JavaScript to execute when unauthenticated visitors, administrators, or other users view the content. This can expose browser-session data and permit victim-context account actions, defacement, or phishing. This issue is fixed in version 1.0.8.5.",
  "id": "CVE-2026-54506",
  "modified": "2026-09-25T03:30:33.218558102Z",
  "published": "2026-09-17T21:47:20.530Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/givanz/Vvveb/releases/tag/1.0.8.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54506.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/givanz/Vvveb/security/advisories/GHSA-5cg7-phhv-4qjr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54506"
    },
    {
      "type": "FIX",
      "url": "https://github.com/givanz/Vvveb/commit/20a01ef08559ffdc97205edeecde86c8ea27e567"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Vvveb: Stored XSS via sanitizeHTML() bypass in user profile bio field"
}