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CVE-2020-26255

Estado: ModificadaCrítica (9.1)—

Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Getkirby — KirbyGetkirby — Panel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-26255",
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  "metrics": {
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          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
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      "value": "Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14."
    },
    {
      "lang": "es",
      "value": "Kirby es un CMS.&#xa0;En Kirby CMS (getkirby/cms) anterior a la versión 3.4.5 y Kirby Panel anterior a la versión 2.5.14, un editor con acceso completo a Kirby Panel puede cargar un archivo PHP .phar y ejecutarlo en el servidor.&#xa0;Esta vulnerabilidad es crítica si puede tener atacantes potenciales en su grupo de usuarios autenticados de Panel, ya que pueden conseguir acceso al servidor con dicho archivo Phar.&#xa0;Los visitantes sin acceso a Panel *cannot* usar este vector de ataque.&#xa0;El problema ha sido parcheado en Kirby versión 2.5.14 y Kirby versión 3.4.5.&#xa0;Actualice a uno de estas o una versión posterior para corregir la vulnerabilidad.&#xa0;Nota: Kirby versión 2 llega al final de su vida útil el 31 de diciembre de 2020. Por lo tanto, recomendamos actualizar sus sitios de Kirby versión 2 a Kirby versión 3. Si no puede actualizar, recomendamos actualizar a Kirby 2.5.14"
    }
  ],
  "lastModified": "2026-06-17T03:07:55.933",
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