CVE-2026-53759

{
  "id": "CVE-2026-53759",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-18T21:16:35.880",
  "lastModified": "2026-10-22T21:09:59.367",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 4.2.0, db_sqlite.py created SQLite databases at predictable paths in the shared /tmp directory and followed attacker-created symbolic links at those paths. An attacker who controls a local monitoring account can create a symlink such as /tmp/linuxfabrik-monitoring-plugins-docker-stats.db and then trigger a sudo-authorized plugin, causing the root process to create or modify the symlink target. The primitive can overwrite arbitrary paths, cause denial of service, or manipulate an existing SQLite database through a crafted rollback journal or write-ahead log. The Monitoring Plugins integration also moved plugin caches through lib.db_sqlite.get_db_path() so they use the secured per-user directory. This issue is fixed in version 4.2.0."
    },
    {
      "lang": "es",
      "value": "linuxfabrik-lib proporciona módulos Python para acceso a bases de datos, almacenamiento en caché, ejecución de shell e integraciones de API. Antes de la versión 4.2.0, db_sqlite.py creaba bases de datos SQLite en rutas predecibles en el directorio compartido /tmp y seguía enlaces simbólicos creados por atacantes en esas rutas. Un atacante que controla una cuenta de monitoreo local puede crear un enlace simbólico como /tmp/linuxfabrik-monitoring-plugins-docker-stats.db y luego activar un plugin autorizado por sudo, haciendo que el proceso root cree o modifique el objetivo del enlace simbólico. La primitiva puede sobrescribir rutas arbitrarias, causar denegación de servicio o manipular una base de datos SQLite existente a través de un diario de reversión o un registro de escritura anticipada manipulado. La integración de Monitoring Plugins también movió las cachés de los plugins a través de lib.db_sqlite.get_db_path() para que usen el directorio seguro por usuario. Este problema está solucionado en la versión 4.2.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Linuxfabrik",
          "product": "monitoring-plugins",
          "versions": [
            {
              "version": "< 4.2.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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",
          "baseScore": 2.0,
          "baseSeverity": "LOW",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-21T19:14:28.252635Z",
          "id": "CVE-2026-53759",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-377"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/Linuxfabrik/lib/blob/main/CHANGELOG.md#v420---2026-06-02",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Linuxfabrik/lib/commit/1e3ca61d45e37ef118aa0c107b420ef74458697e",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Linuxfabrik/lib/releases/tag/v4.2.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-r35r-fpx2-jgr4",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-r35r-fpx2-jgr4",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}