CVE-2026-24486

Estado: ModificadaAlta (7.5)—
Python-Multipart is a streaming multipart parser for Python. Prior to version 0.0.22, a Path Traversal vulnerability exists when using non-default configuration options `UPLOAD_DIR` and `UPLOAD_KEEP_FILENAME=True`. An attacker can write uploaded files to arbitrary locations on the filesystem by crafting a malicious filename. Users should upgrade to version 0.0.22 to receive a patch or, as a workaround, avoid using `UPLOAD_KEEP_FILENAME=True` in project configurations.
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Puntuación base: 7.5
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.24%
Percentil entre todas las CVEs puntuadas: 82
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 access85 %
Impacto principalT1565.001 Stored Data Manipulationimpact90 %
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N indica acceso remoto sin privilegios ni interacción (T1190). CWE-22 (Path Traversal) permite escribir archivos en ubicaciones arbitrarias del servidor, impactando integridad de datos (T1565.001). El acceso remoto a un servicio expuesto sustenta también T1190 como
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

Vulnerability Scanning Restrict File and Directory Permissions Privileged Account Management Remote Data Storage Network Segmentation Limit Access to Resource Over Network
Tecnologías afectadas (1)

Fastapiexpert — Python-multipart
CWE

CWE-22
CWE-22
Referencias

JSON original (NVD)

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