« Volver al listado

CVE-2026-22200

Estado: AnalizadaAlta (8.7)—

Enhancesoft osTicket versions 1.18.x prior to 1.18.3 and 1.17.x prior to 1.17.7 contain an arbitrary file read vulnerability in the ticket PDF export functionality. A remote attacker can submit a ticket containing crafted rich-text HTML that includes PHP filter expressions which are insufficiently sanitized before being processed by the mPDF PDF generator during export. When the attacker exports the ticket to PDF, the generated PDF can embed the contents of attacker-selected files from the server filesystem as bitmap images, allowing disclosure of sensitive local files in the context of the osTicket application user. This issue is exploitable in default configurations where guests may create tickets and access ticket status, or where self-registration is enabled.

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.

Vulnerabilidad en aplicación web expuesta (osTicket) explotable remotamente sin autenticación (AV:N, PR:N) mediante manipulación de entrada HTML/PHP en exportación PDF. Resulta en lectura arbitraria de archivos del servidor (CWE-74) en contexto de aplicación.

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

Vulnerability ScanningUser TrainingRestrict File and Directory PermissionsPrivileged Account ManagementPassword PoliciesNetwork Segmentation

Tecnologías afectadas (1)

Enhancesoft — Osticket

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-22200",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-22200",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-12T19:11:30.771364Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.7,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "repo": "https://github.com/osTicket/osTicket",
          "vendor": "Enhancesoft",
          "product": "osTicket",
          "versions": [
            {
              "status": "affected",
              "version": "1.18.0",
              "lessThan": "1.18.3",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "1.17.0",
              "lessThan": "1.17.7",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "Linux"
          ],
          "packageURL": "pkg:github/osTicket/osTicket",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-01-12T19:16:02.933",
  "references": [
    {
      "url": "https://github.com/osTicket/osTicket/commit/c59b067",
      "tags": [
        "Patch"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/osTicket/osTicket/releases/tag/v1.17.7",
      "tags": [
        "Release Notes"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/osTicket/osTicket/releases/tag/v1.18.3",
      "tags": [
        "Release Notes"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-filters-and-cnext-in-osticket-cve-2026-22200/",
      "tags": [
        "Exploit"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/osticket-pdf-export-arbitrary-file-read",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Enhancesoft osTicket versions 1.18.x prior to 1.18.3 and 1.17.x prior to 1.17.7 contain an arbitrary file read vulnerability in the ticket PDF export functionality. A remote attacker can submit a ticket containing crafted rich-text HTML that includes PHP filter expressions which are insufficiently sanitized before being processed by the mPDF PDF generator during export. When the attacker exports the ticket to PDF, the generated PDF can embed the contents of attacker-selected files from the server filesystem as bitmap images, allowing disclosure of sensitive local files in the context of the osTicket application user. This issue is exploitable in default configurations where guests may create tickets and access ticket status, or where self-registration is enabled."
    },
    {
      "lang": "es",
      "value": "Las versiones de Enhancesoft osTicket 1.18.x anteriores a la 1.18.3 y 1.17.x anteriores a la 1.17.7 contienen una vulnerabilidad de lectura arbitraria de archivos en la funcionalidad de exportación de tickets a PDF. Un atacante remoto puede enviar un ticket que contenga HTML de texto enriquecido manipulado que incluye expresiones de filtro de PHP que no se sanean suficientemente antes de ser procesadas por el generador de PDF mPDF durante la exportación. Cuando el atacante exporta el ticket a PDF, el PDF generado puede incrustar el contenido de archivos seleccionados por el atacante del sistema de archivos del servidor como imágenes de mapa de bits, permitiendo la divulgación de archivos locales sensibles en el contexto del usuario de la aplicación osTicket. Este problema es explotable en configuraciones predeterminadas donde los invitados pueden crear tickets y acceder al estado de los tickets, o donde el auto-registro está habilitado."
    }
  ],
  "lastModified": "2026-07-14T16:16:48.663",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:enhancesoft:osticket:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "615BDC7F-0BBB-436F-9252-9F3AAE3FB4A6",
              "versionEndExcluding": "1.17.7",
              "versionStartIncluding": "1.17"
            },
            {
              "criteria": "cpe:2.3:a:enhancesoft:osticket:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1528CBCF-BB6F-4127-A7E6-CF24FD8B0BF3",
              "versionEndExcluding": "1.18.3",
              "versionStartIncluding": "1.18"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com"
}