CVE-2026-53435

Full vulnerability record from the local CVENow database.
Description

In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards. This can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.
Severity
HIGH
CVSS score
8.8 (v3.1)
Vulnerability status
Modified
Source identifier
[email protected]
Published
2026-06-10 14:16:36.440000
Last modified
2026-10-26 11:10:00.157000
View original CVE JSON
{
  "id": "CVE-2026-53435",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-10T14:16:36.440",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards.\nThis can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller."
    },
    {
      "lang": "es",
      "value": "En Jenkins 2.567 y anteriores, LTS 2.555.2 y anteriores, es posible para los atacantes hacer que Jenkins deserialice tipos arbitrarios definidos en el núcleo o en los plugins de Jenkins a partir de un envío de ’config.xml’ controlado por el atacante de una manera que les permite manejar solicitudes HTTP posteriormente.\nEsto puede usarse para suplantar a cualquier usuario y enviar solicitudes HTTP en su nombre, hasta e incluyendo el uso de la Consola de Scripts para ejecutar código arbitrario, o para leer archivos arbitrarios del controlador de Jenkins."
    }
  ],
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