CVE-2026-27727

Estado: ModificadaAlta (8.9)—

mchange-commons-java, a library that provides Java utilities, includes code that mirrors early implementations of JNDI functionality, including support for remote `factoryClassLocation` values, by which code can be downloaded and invoked within a running application. If an attacker can provoke an application to read a maliciously crafted `jaxax.naming.Reference` or serialized object, they can provoke the download and execution of malicious code.

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Implementations of this functionality within the JDK were disabled by default behind a System property that defaults to `false`, `com.sun.jndi.ldap.object.trustURLCodebase`. However, since mchange-commons-java includes an independent implementation of JNDI derefencing, libraries (such as c3p0) that resolve references via that implementation could be provoked to download and execute malicious code even after the JDK was hardened. Mirroring the JDK patch, mchange-commons-java's JNDI functionality is gated by configuration parameters that default to restrictive values starting in version 0.4.0. No known workarounds are available. Versions prior to 0.4.0 should be avoided on application CLASSPATHs.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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: 8.9

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 1.58%
Percentil entre todas las CVEs puntuadas: 75
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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1059 Command and Scripting Interpreterexecution90 %
Impacto secundarioT1565.001 Stored Data Manipulationimpact75 %

AV:N/PR:H indica acceso remoto con privilegios altos (red adyacente), T1210. La deserialización maliciosa de Reference JNDI permite ejecución de código descargado (T1059) y manipulación de datos (T1565.001).

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 Disable or Remove Feature or Program Vulnerability Scanning Threat Intelligence Program Restrict Web-Based Content Restrict File and Directory Permissions

Tecnologías afectadas (1)

Mchange — Mchange Commons Java

CWE

CWE-74
CWE-502

Referencias

JSON original (NVD)

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  "published": "2026-02-25T17:25:39.910",
  "references": [
    {
      "url": "https://github.com/swaldman/mchange-commons-java/security/advisories/GHSA-m2cm-222f-qw44",
      "tags": [
        "Patch",
        "Vendor Advisory"
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      "source": "security-advisories@github.com"
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    {
      "url": "https://mogwailabs.de/en/blog/2025/02/c3p0-you-little-rascal",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
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      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ]
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      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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      "lang": "en",
      "value": "mchange-commons-java, a library that provides Java utilities, includes code that mirrors early implementations of JNDI functionality, including support for remote `factoryClassLocation` values, by which code can be downloaded and invoked within a running application. If an attacker can provoke an application to read a maliciously crafted `jaxax.naming.Reference` or serialized object, they can provoke the download and execution of malicious code. Implementations of this functionality within the JDK were disabled by default behind a System property that defaults to `false`, `com.sun.jndi.ldap.object.trustURLCodebase`. However, since mchange-commons-java includes an independent implementation of JNDI derefencing, libraries (such as c3p0) that resolve references via that implementation could be provoked to download and execute malicious code even after the JDK was hardened. Mirroring the JDK patch, mchange-commons-java's JNDI functionality is gated by configuration parameters that default to restrictive values starting in version 0.4.0. No known workarounds are available. Versions prior to 0.4.0 should be avoided on application CLASSPATHs."
    },
    {
      "lang": "es",
      "value": "mchange-commons-java, una librería que proporciona utilidades de Java, incluye código que emula implementaciones tempranas de la funcionalidad JNDI, incluyendo soporte para valores remotos de `factoryClassLocation`, mediante los cuales se puede descargar e invocar código dentro de una aplicación en ejecución. Si un atacante puede provocar que una aplicación lea un `jaxax.naming.Reference` o un objeto serializado maliciosamente diseñado, pueden provocar la descarga y ejecución de código malicioso. Las implementaciones de esta funcionalidad dentro del JDK fueron deshabilitadas por defecto detrás de una propiedad de sistema que por defecto es `false`, `com.sun.jndi.ldap.object.trustURLCodebase`. Sin embargo, dado que mchange-commons-java incluye una implementación independiente de la desreferenciación JNDI, las librerías (como c3p0) que resuelven referencias a través de esa implementación podrían ser provocadas para descargar y ejecutar código malicioso incluso después de que el JDK fuera reforzado. Emulando el parche del JDK, la funcionalidad JNDI de mchange-commons-java está restringida por parámetros de configuración que por defecto tienen valores restrictivos a partir de la versión 0.4.0. No se conocen soluciones alternativas disponibles. Las versiones anteriores a la 0.4.0 deben evitarse en los CLASSPATH de las aplicaciones."
    }
  ],
  "lastModified": "2026-08-17T12:17:42.857",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
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              "vulnerable": true,
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              "versionEndExcluding": "0.4.0"
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          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}