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CVE-2026-33001

Estado: ModificadaAlta (8.8)—

Jenkins 2.554 and earlier, LTS 2.541.2 and earlier does not safely handle symbolic links during the extraction of .tar and .tar.gz archives, allowing crafted archives to write files to arbitrary locations on the filesystem, restricted only by file system access permissions of the user running Jenkins. This can be exploited to deploy malicious scripts or plugins on the controller by attackers with Item/Configure permission, or able to control agent processes.

CVSS

Probabilidad de explotación (EPSS)

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.

AV:N, PR:L, acceso a servicios remotos (Jenkins controller/agent) requiere privilegios previos (Item/Configure). Escalada a root/admin mediante escritura arbitraria en filesystem. Exfiltración de datos por acceso a archivos del sistema de Jenkins.

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 ProgramPrivileged Account ManagementExecution PreventionDisable or Remove Feature or ProgramApplication Isolation and SandboxingExploit Protection

Tecnologías afectadas (1)

Jenkins — Jenkins

CWE

Referencias

JSON original (NVD)

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{
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  "references": [
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      "url": "https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "jenkinsci-cert@googlegroups.com"
    },
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      "url": "https://access.redhat.com/errata/RHSA-2026:10199",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
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    {
      "lang": "en",
      "value": "Jenkins 2.554 and earlier, LTS 2.541.2 and earlier does not safely handle symbolic links during the extraction of .tar and .tar.gz archives, allowing crafted archives to write files to arbitrary locations on the filesystem, restricted only by file system access permissions of the user running Jenkins.\nThis can be exploited to deploy malicious scripts or plugins on the controller by attackers with Item/Configure permission, or able to control agent processes."
    },
    {
      "lang": "es",
      "value": "Jenkins 2.554 y anteriores, LTS 2.541.2 y anteriores no maneja de forma segura los enlaces simbólicos durante la extracción de archivos .tar y .tar.gz, permitiendo que archivos especialmente diseñados escriban archivos en ubicaciones arbitrarias del sistema de archivos, restringido únicamente por los permisos de acceso al sistema de archivos del usuario que ejecuta Jenkins. Esto puede ser explotado para desplegar scripts o plugins maliciosos en el controlador por atacantes con permiso de Elemento/Configurar, o capaces de controlar procesos de agente."
    }
  ],
  "lastModified": "2026-09-09T13:19:17.403",
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}