CVE-2026-24895

Estado: AnalizadaAlta (8.9)—

FrankenPHP is a modern application server for PHP. Prior to 1.11.2, FrankenPHP’s CGI path splitting logic improperly handles Unicode characters during case conversion. The logic computes the split index (for finding .php) on a lowercased copy of the request path but applies that byte index to the original path. Because strings.ToLower() in Go can increase the byte length of certain UTF-8 characters (e.g., Ⱥ expands when lowercased), the computed index may not align with the correct position in the original string. This results in an incorrect SCRIPT_NAME and SCRIPT_FILENAME, potentially causing FrankenPHP to execute a file other than the one intended by the URI. This vulnerability is fixed in 1.11.2.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 8.9

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.61%
Percentil entre todas las CVEs puntuadas: 47
Fecha de la puntuación: 5/10/2026

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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access95 %
Impacto principalT1059 Command and Scripting Interpreterexecution90 %
Impacto secundarioT1565.001 Stored Data Manipulationimpact75 %

Vulnerabilidad en servidor web PHP accesible por red sin autenticación (AV:N/PR:N/UI:N). La explotación mediante URI malformada con caracteres Unicode causa ejecución de archivos arbitrarios en el servidor. El impacto principal es ejecución de código remoto; secundariamente, manipulación de datos po

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

Privileged Account Management Vulnerability Scanning Restrict Web-Based Content Restrict File and Directory Permissions Remote Data Storage Network Segmentation

Tecnologías afectadas (1)

PHP — Frankenphp

CWE

CWE-180

Referencias

JSON original (NVD)

Mostrar

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      "value": "FrankenPHP is a modern application server for PHP. Prior to 1.11.2, FrankenPHP’s CGI path splitting logic improperly handles Unicode characters during case conversion. The logic computes the split index (for finding .php) on a lowercased copy of the request path but applies that byte index to the original path. Because strings.ToLower() in Go can increase the byte length of certain UTF-8 characters (e.g., Ⱥ expands when lowercased), the computed index may not align with the correct position in the original string. This results in an incorrect SCRIPT_NAME and SCRIPT_FILENAME, potentially causing FrankenPHP to execute a file other than the one intended by the URI. This vulnerability is fixed in 1.11.2."
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      "value": "FrankenPHP es un moderno servidor de aplicaciones para PHP. Antes de 1.11.2, la lógica de división de rutas CGI de FrankenPHP maneja incorrectamente los caracteres Unicode durante la conversión de mayúsculas y minúsculas. La lógica calcula el índice de división (para encontrar .php) en una copia en minúsculas de la ruta de la solicitud, pero aplica ese índice de bytes a la ruta original. Debido a que strings.ToLower() en Go puede aumentar la longitud en bytes de ciertos caracteres UTF-8 (por ejemplo, ? se expande al convertirse a minúsculas), el índice calculado puede no alinearse con la posición correcta en la cadena original. Esto resulta en un SCRIPT_NAME y SCRIPT_FILENAME incorrectos, potencialmente causando que FrankenPHP ejecute un archivo diferente al previsto por la URI. Esta vulnerabilidad está corregida en 1.11.2."
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