« Volver al listado

CVE-2026-28683

Estado: AnalizadaAlta (8.7)—

Gokapi is a self-hosted file sharing server with automatic expiration and encryption support. Prior to version 2.2.3, if a malicious authenticated user uploads SVG and creates a hotlink for it, they can achieve stored XSS. This issue has been patched in version 2.2.3.

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.

CWE-79 (XSS almacenado) en SVG hotlinked por usuario autenticado permite ejecución JavaScript en navegadores de víctimas; AV:N/PR:L/UI:R confirma vector web interactivo (T1189 drive-by).

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

Restrict Web-Based ContentUser TrainingExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Forceu — Gokapi

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-28683",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-28683",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-06T15:58:13.384293Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.7,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.8,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "Forceu",
          "product": "Gokapi",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.2.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-03-06T05:16:38.443",
  "references": [
    {
      "url": "https://github.com/Forceu/Gokapi/releases/tag/v2.2.3",
      "tags": [
        "Release Notes"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/Forceu/Gokapi/security/advisories/GHSA-3c22-5j5m-4jq7",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Gokapi is a self-hosted file sharing server with automatic expiration and encryption support. Prior to version 2.2.3, if a malicious authenticated user uploads SVG and creates a hotlink for it, they can achieve stored XSS. This issue has been patched in version 2.2.3."
    },
    {
      "lang": "es",
      "value": "Gokapi es un servidor de intercambio de archivos autoalojado con expiración automática y soporte de cifrado. Antes de la versión 2.2.3, si un usuario autenticado malicioso sube un SVG y crea un enlace directo para él, puede lograr XSS almacenado. Este problema ha sido parcheado en la versión 2.2.3."
    }
  ],
  "lastModified": "2026-06-17T10:28:54.137",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:forceu:gokapi:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8645BF69-6E20-4571-ABA4-A9C590D032C8",
              "versionEndExcluding": "2.2.3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}