CVE-2026-8450

Estado: AplazadaCrítica (9.1)—

HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file().

send_file() opens its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes: '| cmd' and 'cmd |' open a pipe to a subprocess, '> path' and '>> path' open the path for write or append.

Untrusted input passed to send_file() can run OS commands at the daemon process UID. The read-pipe form ('cmd |') also leaks subprocess stdout into the HTTP response body. The write-mode forms can create or truncate files at attacker chosen paths.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Puntuación base: 9.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.61%
Percentil entre todas las CVEs puntuadas: 85
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 Interpreterexecution95 %
Impacto secundarioT1565.001 Stored Data Manipulationimpact75 %

AV:N/PR:N/UI:N permite inyección de comandos OS remotamente sin autenticación via send_file(); la entrada no validada interpreta prefijos mágicos ('|cmd', '>path') ejecutando comandos arbitrarios o manipulando archivos.

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)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Perl — Http Daemon^AI

CWE

CWE-73, CWE-78
CWE-78

Referencias

JSON original (NVD)

Mostrar

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      "value": "HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file().\n\nsend_file() opens its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes: '| cmd' and 'cmd |' open a pipe to a subprocess, '> path' and '>> path' open the path for write or append.\n\nUntrusted input passed to send_file() can run OS commands at the daemon process UID. The read-pipe form ('cmd |') also leaks subprocess stdout into the HTTP response body. The write-mode forms can create or truncate files at attacker chosen paths."
    },
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      "value": "Las versiones de HTTP::Daemon anteriores a la 6.17 para Perl permiten la inyección de comandos del sistema operativo a través de send_file().\n\nsend_file() abre su argumento de cadena con la función open() de 2 argumentos de Perl. La forma de 2 argumentos interpreta prefijos mágicos: '| cmd' y 'cmd |' abren una tubería a un subproceso, '> path' y '>> path' abren la ruta para escritura o adición.\n\nLa entrada no confiable pasada a send_file() puede ejecutar comandos del sistema operativo con el UID del proceso del demonio. La forma de tubería de lectura ('cmd |') también filtra la salida estándar (stdout) del subproceso en el cuerpo de la respuesta HTTP. Las formas de modo de escritura pueden crear o truncar archivos en rutas elegidas por el atacante."
    }
  ],
  "lastModified": "2026-07-23T11:10:00.120",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
}