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.
5971 vulnerabilities reference this CWE, most recent first.
GHSA-VG6P-F4H6-CJVM
Vulnerability from github – Published: 2022-10-12 12:00 – Updated: 2022-10-13 12:00The d8s-urls package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backdoor is the democritus-csv package. The affected version is 0.1.0.
{
"affected": [],
"aliases": [
"CVE-2022-42036"
],
"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-urls package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backdoor is the democritus-csv package. The affected version is 0.1.0.",
"id": "GHSA-vg6p-f4h6-cjvm",
"modified": "2022-10-13T12:00:27Z",
"published": "2022-10-12T12:00:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-42036"
},
{
"type": "WEB",
"url": "https://github.com/democritus-project/d8s-urls/issues/12"
},
{
"type": "WEB",
"url": "https://pypi.org/project/d8s-urls"
},
{
"type": "WEB",
"url": "https://pypi.org/project/democritus-csv"
}
],
"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-VG6R-6H68-4G26
Vulnerability from github – Published: 2023-06-06 21:30 – Updated: 2024-04-04 04:36Sourcecodester Faculty Evaluation System v1.0 is vulnerable to arbitrary code execution via ip/eval/ajax.php?action=update_user.
{
"affected": [],
"aliases": [
"CVE-2023-33569"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-06T20:15:14Z",
"severity": "HIGH"
},
"details": "Sourcecodester Faculty Evaluation System v1.0 is vulnerable to arbitrary code execution via ip/eval/ajax.php?action=update_user.",
"id": "GHSA-vg6r-6h68-4g26",
"modified": "2024-04-04T04:36:37Z",
"published": "2023-06-06T21:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33569"
},
{
"type": "WEB",
"url": "https://github.com/Cr4at0r/bug_report/blob/main/vendors/oretnom23/faculty-evaluation-system/RCE-1.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VG6W-CM2V-XCF3
Vulnerability from github – Published: 2022-05-24 19:02 – Updated: 2022-05-24 19:02A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The webserver of the affected products allows unvalidated files to be uploaded, which an attacker could utilize to execute arbitrary code.
{
"affected": [],
"aliases": [
"CVE-2021-27459"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-20T12:15:00Z",
"severity": "CRITICAL"
},
"details": "A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The webserver of the affected products allows unvalidated files to be uploaded, which an attacker could utilize to execute arbitrary code.",
"id": "GHSA-vg6w-cm2v-xcf3",
"modified": "2022-05-24T19:02:54Z",
"published": "2022-05-24T19:02:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27459"
},
{
"type": "WEB",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-138-01"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-VG7H-W623-47V4
Vulnerability from github – Published: 2022-06-03 00:01 – Updated: 2022-06-12 00:00ACEweb Online Portal 3.5.065 allows unauthenticated SMB hash capture via UNC. By specifying the UNC file path of an external SMB share when uploading a file, an attacker can induce the victim server to disclose the username and password hash of the user executing the ACEweb Online software.
{
"affected": [],
"aliases": [
"CVE-2022-24581"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-02T14:15:00Z",
"severity": "HIGH"
},
"details": "ACEweb Online Portal 3.5.065 allows unauthenticated SMB hash capture via UNC. By specifying the UNC file path of an external SMB share when uploading a file, an attacker can induce the victim server to disclose the username and password hash of the user executing the ACEweb Online software.",
"id": "GHSA-vg7h-w623-47v4",
"modified": "2022-06-12T00:00:47Z",
"published": "2022-06-03T00:01:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24581"
},
{
"type": "WEB",
"url": "https://www.aceware.com/forum/viewtopic.php?f=7\u0026t=481"
},
{
"type": "WEB",
"url": "http://aceware.com"
},
{
"type": "WEB",
"url": "http://aceweb.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-VG7V-MPP3-W484
Vulnerability from github – Published: 2026-01-22 18:30 – Updated: 2026-01-27 00:31Unrestricted Upload of File with Dangerous Type vulnerability in blazethemes News Event news-event.This issue affects News Event: from n/a through <= 1.0.1.
{
"affected": [],
"aliases": [
"CVE-2025-62056"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-22T17:15:58Z",
"severity": "CRITICAL"
},
"details": "Unrestricted Upload of File with Dangerous Type vulnerability in blazethemes News Event news-event.This issue affects News Event: from n/a through \u003c= 1.0.1.",
"id": "GHSA-vg7v-mpp3-w484",
"modified": "2026-01-27T00:31:10Z",
"published": "2026-01-22T18:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62056"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Theme/news-event/vulnerability/wordpress-news-event-theme-1-0-1-arbitrary-file-upload-vulnerability?_s_id=cve"
}
],
"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-VG83-7V95-762V
Vulnerability from github – Published: 2023-04-05 21:30 – Updated: 2025-02-13 21:31Ulearn version a5a7ca20de859051ea0470542844980a66dfc05d allows an attacker with administrator permissions to obtain remote code execution on the server through the image upload functionality. This occurs because the application does not validate that the uploaded image is actually an image.
{
"affected": [],
"aliases": [
"CVE-2023-0670"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-05T19:15:00Z",
"severity": "HIGH"
},
"details": "Ulearn version a5a7ca20de859051ea0470542844980a66dfc05d allows an attacker with administrator permissions to obtain remote code execution on the server through the image upload functionality. This occurs because the application does not validate that the uploaded image is actually an image.",
"id": "GHSA-vg83-7v95-762v",
"modified": "2025-02-13T21:31:41Z",
"published": "2023-04-05T21:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0670"
},
{
"type": "WEB",
"url": "https://fluidattacks.com/advisories/scott"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VG8H-4VQC-J2GG
Vulnerability from github – Published: 2025-09-30 12:30 – Updated: 2026-04-08 18:33The Qyrr – simply and modern QR-Code creation plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the blob_to_file() function in all versions up to, and including, 2.0.7. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
{
"affected": [],
"aliases": [
"CVE-2025-10000"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-30T11:37:36Z",
"severity": "MODERATE"
},
"details": "The Qyrr \u2013 simply and modern QR-Code creation plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the blob_to_file() function in all versions up to, and including, 2.0.7. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site\u0027s server which may make remote code execution possible.",
"id": "GHSA-vg8h-4vqc-j2gg",
"modified": "2026-04-08T18:33:56Z",
"published": "2025-09-30T12:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-10000"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/qyrr-code/trunk/inc/class-qyrr-rest.php#L94"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset/3454683"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3ff54694-64c4-4112-b126-aabd3e09144b?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-VGHG-7P7F-GG63
Vulnerability from github – Published: 2025-12-06 12:31 – Updated: 2025-12-06 12:31The All-in-One Video Gallery plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the resolve_import_directory() function in versions 4.5.4 to 4.5.7. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
{
"affected": [],
"aliases": [
"CVE-2025-12966"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-06T10:16:03Z",
"severity": "HIGH"
},
"details": "The All-in-One Video Gallery plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the resolve_import_directory() function in versions 4.5.4 to 4.5.7. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files on the affected site\u0027s server which may make remote code execution possible.",
"id": "GHSA-vghg-7p7f-gg63",
"modified": "2025-12-06T12:31:17Z",
"published": "2025-12-06T12:31:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-12966"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset/3405593/all-in-one-video-gallery/trunk/admin/import-export.php"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0b03bca1-84e3-4220-b39b-69044c42e9f9?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-VGP3-2WC7-6GV5
Vulnerability from github – Published: 2022-07-28 00:00 – Updated: 2022-08-04 00:00Sims v1.0 was discovered to contain an arbitrary file upload vulnerability via the component /uploadServlet. This vulnerability allows attackers to escalate privileges and execute arbitrary commands via a crafted file.
{
"affected": [],
"aliases": [
"CVE-2022-34549"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-07-27T14:15:00Z",
"severity": "HIGH"
},
"details": "Sims v1.0 was discovered to contain an arbitrary file upload vulnerability via the component /uploadServlet. This vulnerability allows attackers to escalate privileges and execute arbitrary commands via a crafted file.",
"id": "GHSA-vgp3-2wc7-6gv5",
"modified": "2022-08-04T00:00:22Z",
"published": "2022-07-28T00:00:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-34549"
},
{
"type": "WEB",
"url": "https://github.com/rawchen/sims/issues/6"
},
{
"type": "WEB",
"url": "http://cwe.mitre.org/data/definitions/434.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-VGVM-WWRQ-C4XW
Vulnerability from github – Published: 2023-07-06 21:14 – Updated: 2026-01-27 15:30An authenticated attacker granted a Viewer or Auditor role on a BIG-IQ can upload arbitrary files using an undisclosed iControl REST endpoint. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
{
"affected": [],
"aliases": [
"CVE-2023-29240"
],
"database_specific": {
"cwe_ids": [
"CWE-269",
"CWE-434",
"CWE-863"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-03T15:15:13Z",
"severity": "MODERATE"
},
"details": "An authenticated attacker granted a Viewer or Auditor role on a BIG-IQ can upload arbitrary files using an undisclosed iControl REST endpoint.\u00a0 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
"id": "GHSA-vgvm-wwrq-c4xw",
"modified": "2026-01-27T15:30:26Z",
"published": "2023-07-06T21:14:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-29240"
},
{
"type": "WEB",
"url": "https://my.f5.com/manage/s/article/K000132719"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"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.