CWE-434
AllowedUnrestricted Upload of File with Dangerous Type
Abstraction: Base · Status: Draft
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
6008 vulnerabilities reference this CWE, most recent first.
GHSA-FMCX-PMPG-Q87J
Vulnerability from github – Published: 2022-05-24 17:14 – Updated: 2022-11-21 21:30A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0920, CVE-2020-0929, CVE-2020-0931, CVE-2020-0932, CVE-2020-0974.
{
"affected": [],
"aliases": [
"CVE-2020-0971"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-04-15T15:15:00Z",
"severity": "MODERATE"
},
"details": "A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka \u0027Microsoft SharePoint Remote Code Execution Vulnerability\u0027. This CVE ID is unique from CVE-2020-0920, CVE-2020-0929, CVE-2020-0931, CVE-2020-0932, CVE-2020-0974.",
"id": "GHSA-fmcx-pmpg-q87j",
"modified": "2022-11-21T21:30:14Z",
"published": "2022-05-24T17:14:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0971"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0971"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-20-1398"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FMF6-J3G7-995J
Vulnerability from github – Published: 2022-12-22 15:30 – Updated: 2023-01-03 21:30here is an arbitrary file upload vulnerability in the file management function module of Classcms3.5.
{
"affected": [],
"aliases": [
"CVE-2022-45966"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-22T15:15:00Z",
"severity": "CRITICAL"
},
"details": "here is an arbitrary file upload vulnerability in the file management function module of Classcms3.5.",
"id": "GHSA-fmf6-j3g7-995j",
"modified": "2023-01-03T21:30:21Z",
"published": "2022-12-22T15:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45966"
},
{
"type": "WEB",
"url": "https://github.com/yinfei6/classcms"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FMJC-52JW-JGCM
Vulnerability from github – Published: 2024-07-04 09:32 – Updated: 2024-07-04 09:32The IMGspider plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'upload' function in all versions up to, and including, 2.3.10. This makes it possible for authenticated attackers, with contributor-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution possible.
{
"affected": [],
"aliases": [
"CVE-2024-6319"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-04T09:15:05Z",
"severity": "HIGH"
},
"details": "The IMGspider plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the \u0027upload\u0027 function in all versions up to, and including, 2.3.10. This makes it possible for authenticated attackers, with contributor-level and above permissions, to upload arbitrary files on the affected site\u0027s server which may make remote code execution possible.",
"id": "GHSA-fmjc-52jw-jgcm",
"modified": "2024-07-04T09:32:49Z",
"published": "2024-07-04T09:32:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6319"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/imgspider/tags/2.3.10/classes/post.class.php#L189"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset/3107741/imgspider"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/63a4a077-c99e-4742-9fa1-f323fd24b950?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FMQ2-WX5C-P3MG
Vulnerability from github – Published: 2024-10-16 09:30 – Updated: 2024-10-16 09:30The File Manager Pro plugin for WordPress is vulnerable to Limited JavaScript File Upload in all versions up to, and including, 8.3.9. This is due to a lack of proper checks on allowed file types. This makes it possible for unauthenticated attackers, with permissions granted by an administrator, to upload .css and .js files, which could lead to Stored Cross-Site Scripting.
{
"affected": [],
"aliases": [
"CVE-2024-8918"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-16T07:15:16Z",
"severity": "HIGH"
},
"details": "The File Manager Pro plugin for WordPress is vulnerable to Limited JavaScript File Upload in all versions up to, and including, 8.3.9. This is due to a lack of proper checks on allowed file types. This makes it possible for unauthenticated attackers, with permissions granted by an administrator, to upload .css and .js files, which could lead to Stored Cross-Site Scripting.",
"id": "GHSA-fmq2-wx5c-p3mg",
"modified": "2024-10-16T09:30:31Z",
"published": "2024-10-16T09:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8918"
},
{
"type": "WEB",
"url": "https://filemanagerpro.io"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/01ef62c8-e862-422c-948d-6d376d021c82?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-FMRQ-56MH-96F5
Vulnerability from github – Published: 2022-05-24 17:33 – Updated: 2022-10-19 19:00An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager's rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.
{
"affected": [],
"aliases": [
"CVE-2020-27387"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-11-05T02:15:00Z",
"severity": "HIGH"
},
"details": "An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager\u0027s rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/\u003cphp_file_name\u003e. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.",
"id": "GHSA-fmrq-56mh-96f5",
"modified": "2022-10-19T19:00:22Z",
"published": "2022-05-24T17:33:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27387"
},
{
"type": "WEB",
"url": "https://github.com/rapid7/metasploit-framework/pull/14340"
},
{
"type": "WEB",
"url": "https://github.com/ttimot24/HorizontCMS/commit/436b5ab679fd27afa3d99c023dbe103113da4fee"
},
{
"type": "WEB",
"url": "https://blog.vonahi.io/whats-in-a-re-name"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/160046/HorizontCMS-1.0.0-beta-Shell-Upload.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FMVF-PPW9-594Q
Vulnerability from github – Published: 2023-07-21 00:30 – Updated: 2023-07-21 00:30A vulnerability was found in Chengdu Flash Flood Disaster Monitoring and Warning System 2.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /Controller/Ajaxfileupload.ashx. The manipulation of the argument file leads to unrestricted upload. The exploit has been disclosed to the public and may be used. VDB-235070 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2023-3802"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-21T00:15:10Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in Chengdu Flash Flood Disaster Monitoring and Warning System 2.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /Controller/Ajaxfileupload.ashx. The manipulation of the argument file leads to unrestricted upload. The exploit has been disclosed to the public and may be used. VDB-235070 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-fmvf-ppw9-594q",
"modified": "2023-07-21T00:30:23Z",
"published": "2023-07-21T00:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3802"
},
{
"type": "WEB",
"url": "https://github.com/GUIqizsq/cve/blob/main/upload_1.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.235070"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.235070"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-FMVM-HQ3C-X9G9
Vulnerability from github – Published: 2026-07-02 18:36 – Updated: 2026-07-02 18:36Redsea Cloud eHR contains an arbitrary file upload vulnerability that allows unauthenticated attackers to achieve remote code execution by uploading malicious files through the PtFjk.mob servlet endpoint. Attackers can submit a multipart POST request with a JSP webshell disguised using a spoofed image/jpeg Content-Type to bypass the absence of extension and MIME type validation, with the uploaded file stored at a predictable path under the uploadfile directory and executed directly by the web server. Exploitation evidence was first observed by the Shadowserver Foundation on 2024-11-03 (UTC).
{
"affected": [],
"aliases": [
"CVE-2024-14037"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-02T17:16:57Z",
"severity": "CRITICAL"
},
"details": "Redsea Cloud eHR contains an arbitrary file upload vulnerability that allows unauthenticated attackers to achieve remote code execution by uploading malicious files through the PtFjk.mob servlet endpoint. Attackers can submit a multipart POST request with a JSP webshell disguised using a spoofed image/jpeg Content-Type to bypass the absence of extension and MIME type validation, with the uploaded file stored at a predictable path under the uploadfile directory and executed directly by the web server. Exploitation evidence was first observed by the Shadowserver Foundation on 2024-11-03 (UTC).",
"id": "GHSA-fmvm-hq3c-x9g9",
"modified": "2026-07-02T18:36:30Z",
"published": "2026-07-02T18:36:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-14037"
},
{
"type": "WEB",
"url": "https://cn-sec.com/archives/2734791.html"
},
{
"type": "WEB",
"url": "https://cn-sec.com/archives/3003231.html"
},
{
"type": "WEB",
"url": "https://redseacloud.com"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/redsea-cloud-ehr-unauthenticated-file-upload-rce-via-ptfjk-mob"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-FMW6-9M87-4J36
Vulnerability from github – Published: 2022-10-12 12:00 – Updated: 2022-10-13 12:00The d8s-html package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backdoor is the democritus-urls package. The affected version is 0.1.0.
{
"affected": [],
"aliases": [
"CVE-2022-41385"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-11T22:15:00Z",
"severity": "CRITICAL"
},
"details": "The d8s-html package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backdoor is the democritus-urls package. The affected version is 0.1.0.",
"id": "GHSA-fmw6-9m87-4j36",
"modified": "2022-10-13T12:00:30Z",
"published": "2022-10-12T12:00:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41385"
},
{
"type": "WEB",
"url": "https://github.com/democritus-project/d8s-html/issues/12"
},
{
"type": "WEB",
"url": "https://pypi.org/project/d8s-html"
},
{
"type": "WEB",
"url": "https://pypi.org/project/democritus-urls"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FP27-JV32-6MPX
Vulnerability from github – Published: 2022-05-14 03:16 – Updated: 2022-05-14 03:16There are Unauthenticated File Upload Vulnerabilities in Citrix XenMobile Server 10.8 before RP2 and 10.7 before RP3.
{
"affected": [],
"aliases": [
"CVE-2018-10648"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-05-23T17:29:00Z",
"severity": "CRITICAL"
},
"details": "There are Unauthenticated File Upload Vulnerabilities in Citrix XenMobile Server 10.8 before RP2 and 10.7 before RP3.",
"id": "GHSA-fp27-jv32-6mpx",
"modified": "2022-05-14T03:16:45Z",
"published": "2022-05-14T03:16:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-10648"
},
{
"type": "WEB",
"url": "https://support.citrix.com/article/CTX234879"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FP3P-PVFR-VQWW
Vulnerability from github – Published: 2025-08-21 15:30 – Updated: 2026-04-01 18:35Unrestricted Upload of File with Dangerous Type vulnerability in An-Themes Pin WP allows Upload a Web Shell to a Web Server.This issue affects Pin WP: from n/a through 6.9.
{
"affected": [],
"aliases": [
"CVE-2025-53251"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-21T15:15:33Z",
"severity": "CRITICAL"
},
"details": "Unrestricted Upload of File with Dangerous Type vulnerability in An-Themes Pin WP allows Upload a Web Shell to a Web Server.This issue affects Pin WP: from n/a through 6.9.",
"id": "GHSA-fp3p-pvfr-vqww",
"modified": "2026-04-01T18:35:57Z",
"published": "2025-08-21T15:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53251"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/pin-wp/vulnerability/wordpress-responsive-menu-plugin-6-1-4-arbitrary-file-upload-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Generate a new, unique filename for an uploaded file instead of using the user-supplied filename, so that no external input is used at all.[REF-422] [REF-423]
Mitigation MIT-21
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.
Mitigation
Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically. [REF-423]
Mitigation MIT-5
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.
- For example, limiting filenames to alphanumeric characters can help to restrict the introduction of unintended file extensions.
Mitigation
Define a very limited set of allowable extensions and only generate filenames that end in these extensions. Consider the possibility of XSS (CWE-79) before allowing .html or .htm file types.
Mitigation
Strategy: Input Validation
Ensure that only one extension is used in the filename. Some web servers, including some versions of Apache, may process files based on inner extensions so that "filename.php.gif" is fed to the PHP interpreter.[REF-422] [REF-423]
Mitigation
When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
Mitigation MIT-15
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation
Do not rely exclusively on sanity checks of file contents to ensure that the file is of the expected type and size. It may be possible for an attacker to hide code in some file segments that will still be executed by the server. For example, GIF images may contain a free-form comments field.
Mitigation
Do not rely exclusively on the MIME content type or filename attribute when determining how to render a file. Validating the MIME content type and ensuring that it matches the extension is only a partial solution.
Mitigation MIT-17
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Mitigation MIT-22
Strategy: Sandbox or Jail
- Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs
In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.