Common Weakness Enumeration

CWE-601

Allowed

URL Redirection to Untrusted Site ('Open Redirect')

Abstraction: Base · Status: Draft

The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

2310 vulnerabilities reference this CWE, most recent first.

GHSA-F3JJ-8CHJ-C8M4

Vulnerability from github – Published: 2025-09-09 18:31 – Updated: 2026-04-01 18:36
VLAI
Details

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in GoodBarber GoodBarber. This issue affects GoodBarber: from n/a through 1.0.26.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-39523"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-09T17:15:45Z",
    "severity": "MODERATE"
  },
  "details": "URL Redirection to Untrusted Site (\u0027Open Redirect\u0027) vulnerability in GoodBarber GoodBarber. This issue affects GoodBarber: from n/a through 1.0.26.",
  "id": "GHSA-f3jj-8chj-c8m4",
  "modified": "2026-04-01T18:36:07Z",
  "published": "2025-09-09T18:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39523"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/wordpress/plugin/goodbarber/vulnerability/wordpress-goodbarber-1-0-26-open-redirection-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-F3RF-CR7F-CWC4

Vulnerability from github – Published: 2024-02-20 06:30 – Updated: 2025-07-29 12:23
VLAI
Summary
Liferay Portal and Liferay DXP Vulnerable to Open Redirect in Countries Management's Edit Region Page
Details

Open redirect vulnerability in the Countries Management’s edit region page in Liferay Portal 7.4.3.45 through 7.4.3.101, and Liferay DXP 2023.Q3 before patch 6, and 7.4 update 45 through 92 allows remote attackers to redirect users to arbitrary external URLs via the _com_liferay_address_web_internal_portlet_CountriesManagementAdminPortlet_redirect parameter.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.liferay.portal:release.portal.bom"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.4.3.45-ga45"
            },
            {
              "fixed": "7.4.3.102-ga102"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.liferay.portal:release.dxp.bom"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2023.Q3"
            },
            {
              "fixed": "2023.Q3.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.liferay.portal:release.dxp.bom"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.4.13.u45"
            },
            {
              "last_affected": "7.4.13.u92"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-5190"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-07-29T12:23:26Z",
    "nvd_published_at": "2024-02-20T06:15:07Z",
    "severity": "MODERATE"
  },
  "details": "Open redirect vulnerability in the Countries Management\u2019s edit region page in Liferay Portal 7.4.3.45 through 7.4.3.101, and Liferay DXP 2023.Q3 before patch 6, and 7.4 update 45 through 92 allows remote attackers to redirect users to arbitrary external URLs via the _com_liferay_address_web_internal_portlet_CountriesManagementAdminPortlet_redirect parameter.",
  "id": "GHSA-f3rf-cr7f-cwc4",
  "modified": "2025-07-29T12:23:26Z",
  "published": "2024-02-20T06:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5190"
    },
    {
      "type": "WEB",
      "url": "https://github.com/liferay/liferay-portal/commit/26277c22498eb03bb192bbe9e5d2ee34d213780b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/liferay/liferay-portal"
    },
    {
      "type": "WEB",
      "url": "https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/cve-2023-5190"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Liferay Portal and Liferay DXP Vulnerable to Open Redirect in Countries Management\u0027s Edit Region Page"
}

GHSA-F4F7-96RJ-QRP5

Vulnerability from github – Published: 2022-09-16 00:00 – Updated: 2022-09-20 00:00
VLAI
Details

OpenAM Consortium Edition version 14.0.0 provided by OpenAM Consortium contains an open redirect vulnerability (CWE-601). When accessing an affected server through some specially crafted URL, the user may be redirected to an arbitrary website.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-31735"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-09-15T05:15:00Z",
    "severity": "MODERATE"
  },
  "details": "OpenAM Consortium Edition version 14.0.0 provided by OpenAM Consortium contains an open redirect vulnerability (CWE-601). When accessing an affected server through some specially crafted URL, the user may be redirected to an arbitrary website.",
  "id": "GHSA-f4f7-96rj-qrp5",
  "modified": "2022-09-20T00:00:29Z",
  "published": "2022-09-16T00:00:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-31735"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openam-jp/openam/issues/259"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/vu/JVNVU99326969"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-F4GP-5RMP-P2PW

Vulnerability from github – Published: 2023-12-19 21:32 – Updated: 2026-04-28 21:33
VLAI
Details

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Doofinder Doofinder WP & WooCommerce Search.This issue affects Doofinder WP & WooCommerce Search: from n/a through 1.5.49.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-40602"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-12-19T20:15:07Z",
    "severity": "MODERATE"
  },
  "details": "URL Redirection to Untrusted Site (\u0027Open Redirect\u0027) vulnerability in Doofinder Doofinder WP \u0026 WooCommerce Search.This issue affects Doofinder WP \u0026 WooCommerce Search: from n/a through 1.5.49.",
  "id": "GHSA-f4gp-5rmp-p2pw",
  "modified": "2026-04-28T21:33:26Z",
  "published": "2023-12-19T21:32:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-40602"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/vulnerability/doofinder-for-woocommerce/wordpress-doofinder-for-woocommerce-plugin-1-5-49-open-redirection-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-F4HQ-453J-P95F

Vulnerability from github – Published: 2021-02-05 20:43 – Updated: 2022-05-26 20:40
VLAI
Summary
Open redirect in Slashify
Details

The package is an Express middleware that normalises routes by stripping any final slash, redirecting, for example, bookings/latest/ to bookings/latest. However, it does not validate the path it redirects to in any way. In particular, if the path starts with two slashes (or two backslashes, or a slash and a backslash, etc.) it may redirect to a different domain.

Consider the example from the docs. Assume we have run it and started a server on localhost:3000, then visiting localhost:3000///github.com/ redirects you to https://github.com.

Recommendation

This vulnerability is currently un-patched in the slashify package so there is no known safe version of this package. Discontinuing use of slashify is recommended.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "slashify"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3189"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-02-05T20:42:47Z",
    "nvd_published_at": "2021-02-19T23:15:00Z",
    "severity": "MODERATE"
  },
  "details": "The package is an Express middleware that normalises routes by stripping any final slash, redirecting, for example, `bookings/latest/` to `bookings/latest`. However, it does not validate the path it redirects to in any way. In particular, if the path starts with two slashes (or two backslashes, or a slash and a backslash, etc.) it may redirect to a different domain.\n\nConsider the [example from the docs](https://www.npmjs.com/package/slashify#usage). Assume we have run it and started a server on `localhost:3000`, then visiting `localhost:3000///github.com/` redirects you to https://github.com.\n\n## Recommendation\n\nThis vulnerability is currently un-patched in the `slashify` package so there is no known safe version of this package. Discontinuing use of `slashify` is recommended.",
  "id": "GHSA-f4hq-453j-p95f",
  "modified": "2022-05-26T20:40:57Z",
  "published": "2021-02-05T20:43:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3189"
    },
    {
      "type": "WEB",
      "url": "https://github.com/divshot/slashify"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210401-0004"
    },
    {
      "type": "ADVISORY",
      "url": "https://securitylab.github.com/advisories/GHSL-2020-199-open-redirect-slashify"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/package/slashify"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Open redirect in Slashify"
}

GHSA-F545-VPWP-R9J7

Vulnerability from github – Published: 2021-12-03 20:41 – Updated: 2021-12-03 15:18
VLAI
Summary
showdoc is vulnerable to URL Redirection to Untrusted Site
Details

showdoc is vulnerable to URL Redirection to Untrusted Site.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "showdoc/showdoc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3989"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-12-02T20:39:26Z",
    "nvd_published_at": "2021-12-01T11:15:00Z",
    "severity": "MODERATE"
  },
  "details": "showdoc is vulnerable to URL Redirection to Untrusted Site.",
  "id": "GHSA-f545-vpwp-r9j7",
  "modified": "2021-12-03T15:18:14Z",
  "published": "2021-12-03T20:41:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3989"
    },
    {
      "type": "WEB",
      "url": "https://github.com/star7th/showdoc/commit/335afc7ed6d6627c3d0434aa9acc168c77117614"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/star7th/showdoc"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/ffc61eff-efea-42c5-92c2-e043fdf904d5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "showdoc is vulnerable to URL Redirection to Untrusted Site"
}

GHSA-F565-6PJW-3WHR

Vulnerability from github – Published: 2026-02-22 06:30 – Updated: 2026-02-23 21:31
VLAI
Details

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-1369"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-22T06:16:02Z",
    "severity": "MODERATE"
  },
  "details": "The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue",
  "id": "GHSA-f565-6pjw-3whr",
  "modified": "2026-02-23T21:31:25Z",
  "published": "2026-02-22T06:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1369"
    },
    {
      "type": "WEB",
      "url": "https://wpscan.com/vulnerability/5a275725-85f2-4463-880b-9473dbdfa8e0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-F5P6-MP58-4CV2

Vulnerability from github – Published: 2022-04-29 03:01 – Updated: 2025-04-03 04:04
VLAI
Details

Opera Browser 7.23, and other versions before 7.50, updates the address bar as soon as the user clicks a link, which allows remote attackers to redirect to other sites via the onUnload attribute.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2004-2260"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2004-12-31T05:00:00Z",
    "severity": "MODERATE"
  },
  "details": "Opera Browser 7.23, and other versions before 7.50, updates the address bar as soon as the user clicks a link, which allows remote attackers to redirect to other sites via the onUnload attribute.",
  "id": "GHSA-f5p6-mp58-4cv2",
  "modified": "2025-04-03T04:04:56Z",
  "published": "2022-04-29T03:01:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2004-2260"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/16131"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/11532"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/secunia_research/2004-2/advisory"
    },
    {
      "type": "WEB",
      "url": "http://www.osvdb.org/6108"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/10337"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-F5VH-4RJ2-W8R8

Vulnerability from github – Published: 2025-10-30 18:31 – Updated: 2025-10-31 17:40
VLAI
Summary
Liferay Portal is vulnerable to DNS rebinding attacks
Details

By default, Liferay Portal 7.4.0 through 7.4.3.119, and older unsupported versions, and Liferay DXP 2024.Q1.1 through 2024.Q1.5, 2023.Q4.0 through 2023.Q4.10, 2023.Q3.1 through 2023.Q3.10, 7.4 GA through update 92, and older unsupported versions is vulnerable to DNS rebinding attacks, which allows remote attackers to redirect users to arbitrary external URLs. This vulnerability can be mitigated by changing the redirect URL security from IP to domain.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.liferay.portal:release.portal.bom"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.4.0-ga1"
            },
            {
              "fixed": "7.4.3.110"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-62266"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-31T17:40:46Z",
    "nvd_published_at": "2025-10-30T18:15:33Z",
    "severity": "MODERATE"
  },
  "details": "By default, Liferay Portal 7.4.0 through 7.4.3.119, and older unsupported versions, and Liferay DXP 2024.Q1.1 through 2024.Q1.5, 2023.Q4.0 through 2023.Q4.10, 2023.Q3.1 through 2023.Q3.10, 7.4 GA through update 92, and older unsupported versions is vulnerable to DNS rebinding attacks, which allows remote attackers to redirect users to arbitrary external URLs. This vulnerability can be mitigated by changing the redirect URL security from IP to domain.",
  "id": "GHSA-f5vh-4rj2-w8r8",
  "modified": "2025-10-31T17:40:46Z",
  "published": "2025-10-30T18:31:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62266"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/liferay/liferay-portal"
    },
    {
      "type": "WEB",
      "url": "https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-62256"
    },
    {
      "type": "WEB",
      "url": "https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-62257"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Liferay Portal is vulnerable to DNS rebinding attacks"
}

GHSA-F6GP-7XM9-VQM8

Vulnerability from github – Published: 2022-05-24 19:05 – Updated: 2022-05-24 19:05
VLAI
Details

The Plus Addons for Elementor Page Builder WordPress plugin before 4.1.10 did not validate a redirect parameter on a specifically crafted URL before redirecting the user to it, leading to an Open Redirect issue.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-24358"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-06-14T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "The Plus Addons for Elementor Page Builder WordPress plugin before 4.1.10 did not validate a redirect parameter on a specifically crafted URL before redirecting the user to it, leading to an Open Redirect issue.",
  "id": "GHSA-f6gp-7xm9-vqm8",
  "modified": "2022-05-24T19:05:17Z",
  "published": "2022-05-24T19:05:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-24358"
    },
    {
      "type": "WEB",
      "url": "https://theplusaddons.com/changelog"
    },
    {
      "type": "WEB",
      "url": "https://wpscan.com/vulnerability/fd4352ad-dae0-4404-94d1-11083cb1f44d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • Use a list of approved URLs or domains to be used for redirection.
Mitigation
Architecture and Design

Use an intermediate disclaimer page that provides the user with a clear warning that they are leaving the current site. Implement a long timeout before the redirect occurs, or force the user to click on the link. Be careful to avoid XSS problems (CWE-79) when generating the disclaimer page.

Mitigation MIT-21.2
Architecture and Design

Strategy: Enforcement by Conversion

  • When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
  • For example, ID 1 could map to "/login.asp" and ID 2 could map to "http://www.example.com/". Features such as the ESAPI AccessReferenceMap [REF-45] provide this capability.
Mitigation
Architecture and Design

Ensure that no externally-supplied requests are honored by requiring that all redirect requests include a unique nonce generated by the application [REF-483]. Be sure that the nonce is not predictable (CWE-330).

Mitigation MIT-6
Architecture and Design Implementation

Strategy: Attack Surface Reduction

  • Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.
  • Many open redirect problems occur because the programmer assumed that certain inputs could not be modified, such as cookies and hidden form fields.
Mitigation MIT-29
Operation

Strategy: Firewall

Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].

CAPEC-178: Cross-Site Flashing

An attacker is able to trick the victim into executing a Flash document that passes commands or calls to a Flash player browser plugin, allowing the attacker to exploit native Flash functionality in the client browser. This attack pattern occurs where an attacker can provide a crafted link to a Flash document (SWF file) which, when followed, will cause additional malicious instructions to be executed. The attacker does not need to serve or control the Flash document. The attack takes advantage of the fact that Flash files can reference external URLs. If variables that serve as URLs that the Flash application references can be controlled through parameters, then by creating a link that includes values for those parameters, an attacker can cause arbitrary content to be referenced and possibly executed by the targeted Flash application.