FKIE_CVE-2026-26045

Vulnerability from fkie_nvd - Published: 2026-02-21 06:16 - Updated: 2026-02-26 19:47
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
A flaw was identified in Moodle’s backup restore functionality where specially crafted backup files were not properly validated during processing. If a malicious backup file is restored, it could lead to unintended execution of server-side code. Since restore capabilities are typically available to privileged users, exploitation requires authenticated access. Successful exploitation could result in full compromise of the Moodle server.
References
patrick@puiterwijk.orghttps://access.redhat.com/security/cve/CVE-2026-26045Third Party Advisory
patrick@puiterwijk.orghttps://bugzilla.redhat.com/show_bug.cgi?id=2440901Third Party Advisory
Impacted products
Vendor Product Version
moodle moodle *
moodle moodle *
moodle moodle *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "80B1995C-45EB-41E5-A497-D565964750A1",
              "versionEndExcluding": "4.5.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8CDB0968-2E2B-4C2F-BF59-9479D1EEC287",
              "versionEndExcluding": "5.0.5",
              "versionStartIncluding": "5.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "36833D08-9C77-48B1-9240-7F326F5BB1CC",
              "versionEndExcluding": "5.1.2",
              "versionStartIncluding": "5.1.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was identified in Moodle\u2019s backup restore functionality where specially crafted backup files were not properly validated during processing. If a malicious backup file is restored, it could lead to unintended execution of server-side code. Since restore capabilities are typically available to privileged users, exploitation requires authenticated access. Successful exploitation could result in full compromise of the Moodle server."
    },
    {
      "lang": "es",
      "value": "Se identific\u00f3 una vulnerabilidad en la funcionalidad de restauraci\u00f3n de copias de seguridad de Moodle donde los archivos de copia de seguridad especialmente dise\u00f1ados no se validaban correctamente durante el procesamiento. Si se restaura un archivo de copia de seguridad malicioso, podr\u00eda conducir a la ejecuci\u00f3n no intencionada de c\u00f3digo del lado del servidor. Dado que las capacidades de restauraci\u00f3n suelen estar disponibles para usuarios privilegiados, la explotaci\u00f3n requiere acceso autenticado. Una explotaci\u00f3n exitosa podr\u00eda resultar en el compromiso total del servidor Moodle."
    }
  ],
  "id": "CVE-2026-26045",
  "lastModified": "2026-02-26T19:47:42.953",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.9,
        "source": "patrick@puiterwijk.org",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-21T06:16:58.867",
  "references": [
    {
      "source": "patrick@puiterwijk.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://access.redhat.com/security/cve/CVE-2026-26045"
    },
    {
      "source": "patrick@puiterwijk.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2440901"
    }
  ],
  "sourceIdentifier": "patrick@puiterwijk.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "patrick@puiterwijk.org",
      "type": "Secondary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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