FKIE_CVE-2026-27641

Vulnerability from fkie_nvd - Published: 2026-02-25 04:16 - Updated: 2026-06-17 10:27
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Flask-Reuploaded provides file uploads for Flask. A critical path traversal and extension bypass vulnerability in versions prior to 1.5.0 allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection (SSTI). Flask-Reuploaded has been patched in version 1.5.0. Some workarounds are available. Do not pass user input to the `name` parameter, use auto-generated filenames only, and implement strict input validation if `name` must be used.
References
security-advisories@github.comhttps://github.com/jugmac00/flask-reuploaded/commit/d64c6b2f71cb73734fc38baa0e3e156926361288Patch
security-advisories@github.comhttps://github.com/jugmac00/flask-reuploaded/pull/180Issue Tracking, Patch
security-advisories@github.comhttps://github.com/jugmac00/flask-reuploaded/security/advisories/GHSA-65mp-fq8v-56jrExploit, Vendor Advisory
Impacted products
Vendor Product Version
jugmac00 flask-reuploaded *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "flask-reuploaded",
          "vendor": "jugmac00",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.5.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:jugmac00:flask-reuploaded:*:*:*:*:*:python:*:*",
              "matchCriteriaId": "ADCCDA77-EDD0-4AC4-B9BA-7087B5D9DC32",
              "versionEndExcluding": "1.5.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Flask-Reuploaded provides file uploads for Flask. A critical path traversal and extension bypass vulnerability in versions prior to 1.5.0 allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection (SSTI). Flask-Reuploaded has been patched in version 1.5.0. Some workarounds are available. Do not pass user input to the `name` parameter, use auto-generated filenames only, and implement strict input validation if `name` must be used."
    },
    {
      "lang": "es",
      "value": "Flask-Reuploaded proporciona carga de archivos para Flask. Una vulnerabilidad cr\u00edtica de salto de ruta y omisi\u00f3n de extensi\u00f3n en versiones anteriores a la 1.5.0 permite a atacantes remotos lograr escritura arbitraria de archivos y ejecuci\u00f3n remota de c\u00f3digo a trav\u00e9s de Inyecci\u00f3n de Plantillas del Lado del Servidor (SSTI). Flask-Reuploaded ha sido parcheado en la versi\u00f3n 1.5.0. Hay disponibles algunas soluciones alternativas. No pase entradas de usuario al par\u00e1metro \u0027name\u0027, use solo nombres de archivo autogenerados, e implemente una estricta validaci\u00f3n de entrada si se tiene que usar \u0027name\u0027."
    }
  ],
  "id": "CVE-2026-27641",
  "lastModified": "2026-06-17T10:27:26.560",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-27641",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-25T21:12:32.024132Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-25T04:16:04.620",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/jugmac00/flask-reuploaded/commit/d64c6b2f71cb73734fc38baa0e3e156926361288"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/jugmac00/flask-reuploaded/pull/180"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/jugmac00/flask-reuploaded/security/advisories/GHSA-65mp-fq8v-56jr"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1336"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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