{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.0.8.2"
              },
              {
                "last_affected": "1.0.8.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "8b9db6a408ba35d8ac1dd078823c73f76584d78f"
            },
            {
              "fixed": "6fb8eaa998265e33e8802cbc220d8859dbc144f2"
            }
          ],
          "repo": "https://github.com/givanz/vvveb",
          "type": "GIT"
        }
      ],
      "versions": [
        "1.0.8.2"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-434"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6257.json"
  },
  "details": "Vvveb CMS v1.0.8.2 contains a remote code execution vulnerability in its media management functionality where a missing return statement in the file rename handler allows authenticated attackers to rename files to blocked extensions .php or .htaccess. Attackers can exploit this logic flaw by first uploading a text file and renaming it to .htaccess to inject Apache directives that register PHP-executable MIME types, then uploading another file and renaming it to .php to execute arbitrary operating system commands as the www-data user.",
  "id": "CVE-2026-6257",
  "modified": "2026-07-15T01:48:58.496218419Z",
  "published": "2026-04-20T19:09:45.927Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6257.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6257"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/vvveb-cms-remote-code-execution-via-media-management"
    },
    {
      "type": "FIX",
      "url": "https://github.com/givanz/Vvveb/commit/6fb8eaa998265e33e8802cbc220d8859dbc144f2"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Vvveb CMS \u003c v1.0.8.2 Remote Code Execution via Media Management"
}