CVE-2025-49581

Estado: AnalizadaAlta (8.7)—

XWiki is a generic wiki platform. Any user with edit right on a page (could be the user's profile) can execute code (Groovy, Python, Velocity) with programming right by defining a wiki macro. This allows full access to the whole XWiki installation. The main problem is that if a wiki macro parameter allows wiki syntax, its default value is executed with the rights of the author of the document where it is used.

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This can be exploited by overriding a macro like the children macro that is used in a page that has programming right like the page XWiki.ChildrenMacro and thus allows arbitrary script macros. This vulnerability has been patched in XWiki 16.4.7, 16.10.3 and 17.0.0 by executing wiki parameters with the rights of the wiki macro's author when the parameter's value is the default value.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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: 8.7

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.59%
Percentil entre todas las CVEs puntuadas: 46
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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement75 %
Impacto principalT1059 Command and Scripting Interpreterexecution90 %
Impacto secundarioT1068 Exploitation for Privilege Escalationprivilege escalation80 %

Acceso de red con privilegios (PR:L) en servicio XWiki remoto; ejecución de código Groovy/Python/Velocity y escalada a derechos de programación permiten control total de la instalación.

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

Threat Intelligence Program Privileged Account Management Execution Prevention Disable or Remove Feature or Program Application Isolation and Sandboxing Exploit Protection

Tecnologías afectadas (1)

Xwiki — Xwiki

CWE

CWE-94, CWE-250, CWE-270

Referencias

JSON original (NVD)

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      "value": "XWiki is a generic wiki platform. Any user with edit right on a page (could be the user's profile) can execute code (Groovy, Python, Velocity) with programming right by defining a wiki macro. This allows full access to the whole XWiki installation. The main problem is that if a wiki macro parameter allows wiki syntax, its default value is executed with the rights of the author of the document where it is used. This can be exploited by overriding a macro like the children macro that is used in a page that has programming right like the page XWiki.ChildrenMacro and thus allows arbitrary script macros. This vulnerability has been patched in XWiki 16.4.7, 16.10.3 and 17.0.0 by executing wiki parameters with the rights of the wiki macro's author when the parameter's value is the default value."
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      "value": "XWiki es una plataforma wiki genérica. Cualquier usuario con permisos de edición en una página (podría ser su perfil) puede ejecutar código (Groovy, Python, Velocity) con permisos de programación mediante la definición de una macro wiki. Esto permite acceso completo a toda la instalación de XWiki. El principal problema radica en que si un parámetro de una macro wiki permite la sintaxis wiki, su valor predeterminado se ejecuta con los permisos del autor del documento donde se utiliza. Esto se puede explotar sobrescribiendo una macro como la macro secundaria que se utiliza en una página con permisos de programación, como la página XWiki.ChildrenMacro, lo que permite macros de script arbitrarias. Esta vulnerabilidad se ha corregido en XWiki 16.4.7, 16.10.3 y 17.0.0 mediante la ejecución de parámetros wiki con los permisos del autor de la macro wiki cuando el valor del parámetro es el predeterminado."
    }
  ],
  "lastModified": "2026-06-17T09:31:31.820",
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