CVE-2025-12974
The Gravity Forms plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the legacy chunked upload mechanism in all versions up to, and including, 2.9.21.1. This is due to the extension blacklist not including .phar files, which can be uploaded through the chunked upload mechanism. This makes it possible for unauthenticated attackers to upload executable .phar files and achieve remote code execution on the server, granted they can discover or enumerate the upload path. In order for an attacker to achieve RCE, the web server needs to be set up to process .phar file as PHP via file handler mapping or similar.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.67%
- Percentil entre todas las CVEs puntuadas: 50
- Fecha de la puntuación: 6/10/2026
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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access92 % - Impacto principal
T1505.003Web Shellpersistence88 % - Impacto secundario
T1059Command and Scripting Interpreterexecution85 %
Plugin WordPress vulnerable a carga de archivos sin validación (CWE-434) accesible remotamente sin autenticación. Upload de .phar ejecutable como web shell permite RCE si el servidor procesa PHP.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-434
Referencias
- https://docs.gravityforms.com/gravityforms-change-log/
- https://github.com/pronamic/gravityforms/blob/06de1b7e169e4f073e9d0d491e17b89365b48c20/common/common.php#L4178
- https://github.com/pronamic/gravityforms/blob/06de1b7e169e4f073e9d0d491e17b89365b48c20/includes/upload.php#L97
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b6395439-da45-4b64-8e30-b106dffd46c1?source=cve
JSON original (NVD)
Mostrar
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},
{
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},
{
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"version": "2.0.3",
"timestamp": "2025-11-18T15:04:01.244566Z"
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"attackComplexity": "HIGH",
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"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
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"affected": [
{
"source": "security@wordfence.com",
"affectedData": [
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"vendor": "Gravity Forms",
"product": "Gravity Forms",
"versions": [
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"version": "0",
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"published": "2025-11-18T04:15:43.583",
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"weaknesses": [
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"source": "security@wordfence.com",
"description": [
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"value": "CWE-434"
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"descriptions": [
{
"lang": "en",
"value": "The Gravity Forms plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the legacy chunked upload mechanism in all versions up to, and including, 2.9.21.1. This is due to the extension blacklist not including .phar files, which can be uploaded through the chunked upload mechanism. This makes it possible for unauthenticated attackers to upload executable .phar files and achieve remote code execution on the server, granted they can discover or enumerate the upload path. In order for an attacker to achieve RCE, the web server needs to be set up to process .phar file as PHP via file handler mapping or similar."
}
],
"lastModified": "2026-06-17T08:33:18.607",
"sourceIdentifier": "security@wordfence.com"
}