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CVE-2026-54337

Estado: AplazadaCrítica (9.8)—

Fireshare facilitates self-hosted media and link sharing. Prior to version 1.6.14, an argument Injection in the video upload function allows unauthenticated attacker to write/overwrite system files. Version 1.6.14 fixes the issue.

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.

Vector CVSS AV:N/AC:L/PR:N/UI:N indica red sin autenticación (T1190). Inyección de argumentos (CWE-88) en carga de vídeo permite sobrescribir archivos de sistema (T1565.001) y potencialmente ejecutar código.

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

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentRestrict File and Directory PermissionsRemote Data StorageNetwork Segmentation

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Shaneisrael — FireshareAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-54337",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54337",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-16T18:29:18.494535Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "ShaneIsrael",
          "product": "fireshare",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.6.14"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-15T21:16:36.920",
  "references": [
    {
      "url": "https://github.com/ShaneIsrael/fireshare/security/advisories/GHSA-hmh2-6g84-q8jx",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-88"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Fireshare facilitates self-hosted media and link sharing. Prior to version 1.6.14, an argument Injection in the video upload function allows unauthenticated attacker to write/overwrite system files. Version 1.6.14 fixes the issue."
    }
  ],
  "lastModified": "2026-09-30T17:51:56.193",
  "sourceIdentifier": "security-advisories@github.com"
}