Vulnerabilites related to flask-cors_project - flask-cors
Vulnerability from fkie_nvd
Published
2020-08-31 04:15
Modified
2024-11-21 05:16
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00028.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00032.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00039.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00048.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://github.com/corydolphin/flask-cors/releases/tag/3.0.9Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2020/dsa-4775Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00028.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00032.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00039.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00048.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/corydolphin/flask-cors/releases/tag/3.0.9Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4775Third Party Advisory
Impacted products
Vendor Product Version
flask-cors_project flask-cors *
debian debian_linux 10.0
opensuse backports_sle 15.0
opensuse backports_sle 15.0
opensuse leap 15.1
opensuse leap 15.2


To clipboard 

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              "matchCriteriaId": "6146EBFD-C1C1-4543-A5D9-9EC89EC5F664",
              "versionEndExcluding": "3.0.9",
              "vulnerable": true
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  "descriptions": [
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      "lang": "en",
      "value": "An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en Flask-CORS (tambi\u00e9n se conoce como CORS Middleware para Flask) versiones anteriores a 3.0.9. Permite que un salto de directorios ../  acceda a recursos privados porque la coincidencia de recursos no garantiza que los nombres de ruta est\u00e9n en un formato can\u00f3nico"
    }
  ],
  "id": "CVE-2020-25032",
  "lastModified": "2024-11-21T05:16:42.877",
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          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
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        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
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  },
  "published": "2020-08-31T04:15:12.060",
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    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00028.html"
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    {
      "source": "cve@mitre.org",
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      "source": "cve@mitre.org",
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      "source": "cve@mitre.org",
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "nvd@nist.gov",
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  ]
}

Vulnerability from fkie_nvd
Published
2025-03-20 10:15
Modified
2025-08-01 01:32
Severity ?
5.3 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus function, which converts the '+' character to a space ' '. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues.
References
security@huntr.devhttps://huntr.com/bounties/731a6cd4-d05f-4fe6-8f5b-fe088d7b34e0Exploit, Third Party Advisory
Impacted products
Vendor Product Version
flask-cors_project flask-cors 4.0.1


To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the \u0027+\u0027 character in URL paths. The request.path is passed through the unquote_plus function, which converts the \u0027+\u0027 character to a space \u0027 \u0027. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en corydolphin/flask-cors versi\u00f3n 4.0.1 permite coincidencias CORS inconsistentes debido a la gesti\u00f3n del car\u00e1cter \"+\" en las rutas URL. El archivo request.path se pasa a trav\u00e9s de la funci\u00f3n unquote_plus, que convierte el car\u00e1cter \"+\" en un espacio. Este comportamiento provoca una normalizaci\u00f3n incorrecta de las rutas, lo que puede provocar discrepancias en la configuraci\u00f3n CORS. Como resultado, los endpoints podr\u00edan no coincidir correctamente con su configuraci\u00f3n CORS, lo que provoca la aplicaci\u00f3n inesperada de pol\u00edticas CORS. Esto puede provocar accesos no autorizados entre or\u00edgenes o bloquear solicitudes v\u00e1lidas, creando vulnerabilidades de seguridad y problemas de usabilidad."
    }
  ],
  "id": "CVE-2024-6844",
  "lastModified": "2025-08-01T01:32:18.170",
  "metrics": {
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          "confidentialityImpact": "LOW",
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}

Vulnerability from fkie_nvd
Published
2025-03-20 10:15
Modified
2025-08-01 01:36
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
corydolphin/flask-cors version 4.01 contains a vulnerability where the request path matching is case-insensitive due to the use of the `try_match` function, which is originally intended for matching hosts. This results in a mismatch because paths in URLs are case-sensitive, but the regex matching treats them as case-insensitive. This misconfiguration can lead to significant security vulnerabilities, allowing unauthorized origins to access paths meant to be restricted, resulting in data exposure and potential data leaks.
References
security@huntr.devhttps://huntr.com/bounties/808c11af-faee-43a8-824b-b5ab4f62b9e6Exploit, Third Party Advisory
Impacted products
Vendor Product Version
flask-cors_project flask-cors 4.0.1


To clipboard 

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    },
    {
      "lang": "es",
      "value": "La versi\u00f3n 4.01 de corydolphin/flask-cors contiene una vulnerabilidad donde la coincidencia de rutas de solicitud no distingue entre may\u00fasculas y min\u00fasculas debido al uso de la funci\u00f3n `try_match`, originalmente dise\u00f1ada para la coincidencia de hosts. Esto genera una discrepancia, ya que las rutas en las URL distinguen entre may\u00fasculas y min\u00fasculas, pero la coincidencia de expresiones regulares las trata como si no las tuvieran. Esta configuraci\u00f3n incorrecta puede generar vulnerabilidades de seguridad importantes, permitiendo que or\u00edgenes no autorizados accedan a rutas que deber\u00edan estar restringidas, lo que resulta en la exposici\u00f3n y posibles fugas de datos."
    }
  ],
  "id": "CVE-2024-6866",
  "lastModified": "2025-08-01T01:36:17.260",
  "metrics": {
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}

Vulnerability from fkie_nvd
Published
2025-03-20 10:15
Modified
2025-08-01 12:26
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
corydolphin/flask-cors version 4.0.1 contains an improper regex path matching vulnerability. The plugin prioritizes longer regex patterns over more specific ones when matching paths, which can lead to less restrictive CORS policies being applied to sensitive endpoints. This mismatch in regex pattern priority allows unauthorized cross-origin access to sensitive data or functionality, potentially exposing confidential information and increasing the risk of unauthorized actions by malicious actors.
References
security@huntr.devhttps://huntr.com/bounties/403eb1fc-86f4-4820-8eba-0f3dfae9f2b4Exploit, Third Party Advisory
Impacted products
Vendor Product Version
flask-cors_project flask-cors 4.0.1


To clipboard 

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    },
    {
      "lang": "es",
      "value": "La versi\u00f3n 4.0.1 de corydolphin/flask-cors contiene una vulnerabilidad de coincidencia incorrecta de rutas de expresiones regulares. El complemento prioriza los patrones de expresiones regulares m\u00e1s largos sobre los m\u00e1s espec\u00edficos al comparar rutas, lo que puede provocar la aplicaci\u00f3n de pol\u00edticas CORS menos restrictivas a endpoints sensibles. Esta discrepancia en la prioridad de los patrones de expresiones regulares permite el acceso no autorizado de origen cruzado a datos o funcionalidades sensibles, lo que podr\u00eda exponer informaci\u00f3n confidencial y aumentar el riesgo de acciones no autorizadas por parte de actores maliciosos."
    }
  ],
  "id": "CVE-2024-6839",
  "lastModified": "2025-08-01T12:26:41.760",
  "metrics": {
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CVE-2024-6844 (GCVE-0-2024-6844)
Vulnerability from cvelistv5
Published
2025-03-20 10:10
Modified
2025-03-20 14:26
Severity ?
5.3 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
Summary
A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus function, which converts the '+' character to a space ' '. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues.
References
Impacted products
Vendor Product Version
corydolphin corydolphin/flask-cors Version: unspecified   <
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CVE-2020-25032 (GCVE-0-2020-25032)
Vulnerability from cvelistv5
Published
2020-08-31 03:57
Modified
2024-08-04 15:26
Severity ?
CWE
  • n/a
Summary
An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2024-6866 (GCVE-0-2024-6866)
Vulnerability from cvelistv5
Published
2025-03-20 10:10
Modified
2025-03-20 18:14
Severity ?
5.3 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
Summary
corydolphin/flask-cors version 4.01 contains a vulnerability where the request path matching is case-insensitive due to the use of the `try_match` function, which is originally intended for matching hosts. This results in a mismatch because paths in URLs are case-sensitive, but the regex matching treats them as case-insensitive. This misconfiguration can lead to significant security vulnerabilities, allowing unauthorized origins to access paths meant to be restricted, resulting in data exposure and potential data leaks.
References
Impacted products
Vendor Product Version
corydolphin corydolphin/flask-cors Version: unspecified   <
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Show details on NVD website

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CVE-2024-6839 (GCVE-0-2024-6839)
Vulnerability from cvelistv5
Published
2025-03-20 10:09
Modified
2025-03-20 18:35
Severity ?
4.3 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE
  • CWE-41 - Improper Resolution of Path Equivalence
Summary
corydolphin/flask-cors version 4.0.1 contains an improper regex path matching vulnerability. The plugin prioritizes longer regex patterns over more specific ones when matching paths, which can lead to less restrictive CORS policies being applied to sensitive endpoints. This mismatch in regex pattern priority allows unauthorized cross-origin access to sensitive data or functionality, potentially exposing confidential information and increasing the risk of unauthorized actions by malicious actors.
References
Impacted products
Vendor Product Version
corydolphin corydolphin/flask-cors Version: unspecified   <
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Show details on NVD website

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