FKIE_CVE-2026-30940

Vulnerability from fkie_nvd - Published: 2026-03-31 01:16 - Updated: 2026-04-01 14:24
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3.
References
security-advisories@github.comhttps://basercms.net/security/JVN_20837860
security-advisories@github.comhttps://github.com/baserproject/basercms/releases/tag/5.2.3
security-advisories@github.comhttps://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3."
    },
    {
      "lang": "es",
      "value": "baserCMS es un framework de desarrollo de sitios web. Antes de la versi\u00f3n 5.2.3, existe una vulnerabilidad de salto de ruta en la API de gesti\u00f3n de archivos de temas (/baser/api/admin/bc-theme-file/theme_files/add.json) que permite la escritura arbitraria de archivos. Un administrador autenticado puede incluir secuencias ../ en el par\u00e1metro de ruta para crear un archivo PHP en un directorio arbitrario fuera del directorio de temas, lo que puede resultar en ejecuci\u00f3n remota de c\u00f3digo (RCE). Este problema ha sido parcheado en la versi\u00f3n 5.2.3."
    }
  ],
  "id": "CVE-2026-30940",
  "lastModified": "2026-04-01T14:24:02.583",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-31T01:16:36.430",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://basercms.net/security/JVN_20837860"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/baserproject/basercms/releases/tag/5.2.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-73"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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