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.
5995 vulnerabilities reference this CWE, most recent first.
GHSA-5499-PRX8-C26X
Vulnerability from github – Published: 2022-04-29 00:00 – Updated: 2022-05-07 00:00novel-plus V3.6.1 allows unrestricted file uploads. Unrestricted file suffixes and contents can lead to server attacks and arbitrary code execution.
{
"affected": [],
"aliases": [
"CVE-2021-41921"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-28T13:15:00Z",
"severity": "CRITICAL"
},
"details": "novel-plus V3.6.1 allows unrestricted file uploads. Unrestricted file suffixes and contents can lead to server attacks and arbitrary code execution.",
"id": "GHSA-5499-prx8-c26x",
"modified": "2022-05-07T00:00:56Z",
"published": "2022-04-29T00:00:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-41921"
},
{
"type": "WEB",
"url": "https://github.com/201206030/novel-plus/issues/62"
}
],
"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-54C7-72V9-GM27
Vulnerability from github – Published: 2025-03-20 12:32 – Updated: 2025-03-20 12:32In version v12 of parisneo/lollms-webui, the 'Send file to AL' function allows uploading files with various extensions, including potentially dangerous ones like .py, .sh, .bat, and more. Attackers can exploit this by uploading files with malicious content and then using the '/open_file' API endpoint to execute these files. The vulnerability arises from the use of 'subprocess.Popen' to open files without proper validation, leading to potential remote code execution.
{
"affected": [],
"aliases": [
"CVE-2024-9920"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-20T10:15:50Z",
"severity": "MODERATE"
},
"details": "In version v12 of parisneo/lollms-webui, the \u0027Send file to AL\u0027 function allows uploading files with various extensions, including potentially dangerous ones like .py, .sh, .bat, and more. Attackers can exploit this by uploading files with malicious content and then using the \u0027/open_file\u0027 API endpoint to execute these files. The vulnerability arises from the use of \u0027subprocess.Popen\u0027 to open files without proper validation, leading to potential remote code execution.",
"id": "GHSA-54c7-72v9-gm27",
"modified": "2025-03-20T12:32:52Z",
"published": "2025-03-20T12:32:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-9920"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/c70c6732-23b3-4ef8-aec6-0a47467d1ed5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-54J6-6HQ9-52FG
Vulnerability from github – Published: 2024-03-12 09:30 – Updated: 2025-01-24 09:30An unauthenticated remote attacker can upload a arbitrary script file due to improper input validation. The upload destination is fixed and is write only.
{
"affected": [],
"aliases": [
"CVE-2024-25994"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-12T09:15:07Z",
"severity": "MODERATE"
},
"details": "An unauthenticated remote attacker can upload a arbitrary script file due to improper input validation.\u00a0The upload destination is fixed and is write only.",
"id": "GHSA-54j6-6hq9-52fg",
"modified": "2025-01-24T09:30:43Z",
"published": "2024-03-12T09:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-25994"
},
{
"type": "WEB",
"url": "https://cert.vde.com/en/advisories/VDE-2024-011"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-54JJ-PXX2-PV8H
Vulnerability from github – Published: 2022-05-17 04:43 – Updated: 2025-04-14 15:47The (1) file upload component and (2) File Abstraction Layer (FAL) in TYPO3 6.0.x before 6.0.8 and 6.1.x before 6.1.3 do not properly check file extensions, which allow remote authenticated editors to execute arbitrary PHP code by uploading a .php file.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms"
},
"ranges": [
{
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "6.0.8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms"
},
"ranges": [
{
"events": [
{
"introduced": "6.1.0"
},
{
"fixed": "6.1.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2013-4250"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-434"
],
"github_reviewed": true,
"github_reviewed_at": "2025-04-14T15:47:43Z",
"nvd_published_at": "2014-05-20T14:55:00Z",
"severity": "HIGH"
},
"details": "The (1) file upload component and (2) File Abstraction Layer (FAL) in TYPO3 6.0.x before 6.0.8 and 6.1.x before 6.1.3 do not properly check file extensions, which allow remote authenticated editors to execute arbitrary PHP code by uploading a .php file.",
"id": "GHSA-54jj-pxx2-pv8h",
"modified": "2025-04-14T15:47:43Z",
"published": "2022-05-17T04:43:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2013-4250"
},
{
"type": "PACKAGE",
"url": "https://github.com/TYPO3/typo3"
},
{
"type": "WEB",
"url": "https://typo3.org/security/advisory/typo3-core-sa-2013-002"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "TYPO3 doesn\u0027t properly check file extensions"
}
GHSA-54MJ-VCVJ-Q3V5
Vulnerability from github – Published: 2025-12-22 21:30 – Updated: 2026-01-22 16:53An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute arbitrary code via uploading a crafted PDF file. While Umbraco provides hooks to perform file validation, it does not do implement filtering by default. Users are expected to implement their own validation.
Note: This vulnerability is disputed by Ubraco.
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Umbraco.Cms"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.3.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-67288"
],
"database_specific": {
"cwe_ids": [
"CWE-434",
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2025-12-22T22:47:47Z",
"nvd_published_at": "2025-12-22T19:15:49Z",
"severity": "MODERATE"
},
"details": "An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute arbitrary code via uploading a crafted PDF file. While Umbraco provides [hooks to perform file validation](https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation), it does not do implement filtering by default. Users are expected to implement their own validation.\n\nNote: This vulnerability is [disputed by Ubraco](https://github.com/github/advisory-database/pull/6633).",
"id": "GHSA-54mj-vcvj-q3v5",
"modified": "2026-01-22T16:53:47Z",
"published": "2025-12-22T21:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-67288"
},
{
"type": "WEB",
"url": "https://github.com/github/advisory-database/pull/6633"
},
{
"type": "WEB",
"url": "https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation"
},
{
"type": "PACKAGE",
"url": "https://github.com/umbraco/Umbraco-CMS"
},
{
"type": "WEB",
"url": "https://github.com/vuquyen03/CVE/tree/main/CVE-2025-67288"
},
{
"type": "WEB",
"url": "http://umbraco.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:P",
"type": "CVSS_V4"
}
],
"summary": "Umbraco CMS has an arbitrary file upload vulnerability"
}
GHSA-553C-2CMM-9M3C
Vulnerability from github – Published: 2022-05-24 19:01 – Updated: 2024-03-21 03:34** UNSUPPORTED WHEN ASSIGNED ** An issue was discovered on Zebra (formerly Motorola Solutions) Fixed RFID Reader FX9500 devices. An unauthenticated attacker can upload arbitrary files to the filesystem that can then be accessed through the web interface. This can lead to information disclosure and code execution. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
{
"affected": [],
"aliases": [
"CVE-2021-32089"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-11T21:15:00Z",
"severity": "CRITICAL"
},
"details": "** UNSUPPORTED WHEN ASSIGNED ** An issue was discovered on Zebra (formerly Motorola Solutions) Fixed RFID Reader FX9500 devices. An unauthenticated attacker can upload arbitrary files to the filesystem that can then be accessed through the web interface. This can lead to information disclosure and code execution. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.",
"id": "GHSA-553c-2cmm-9m3c",
"modified": "2024-03-21T03:34:04Z",
"published": "2022-05-24T19:01:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32089"
},
{
"type": "WEB",
"url": "https://www.securifera.com/advisories/cve-2021-32089"
},
{
"type": "WEB",
"url": "https://www.zebra.com/us/en/support-downloads/rfid/rfid-readers/fx9500.html"
}
],
"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-5549-7VQP-PVXQ
Vulnerability from github – Published: 2022-05-24 17:00 – Updated: 2024-04-04 02:36ClipSoft REXPERT 1.0.0.527 and earlier version allows remote attacker to upload arbitrary local file via the ActiveX method in RexViewerCtrl30.ocx. That could lead to disclosure of sensitive information. User interaction is required to exploit this vulnerability in that the target must visit a malicious web page.
{
"affected": [],
"aliases": [
"CVE-2019-17325"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-10-30T21:15:00Z",
"severity": "MODERATE"
},
"details": "ClipSoft REXPERT 1.0.0.527 and earlier version allows remote attacker to upload arbitrary local file via the ActiveX method in RexViewerCtrl30.ocx. That could lead to disclosure of sensitive information. User interaction is required to exploit this vulnerability in that the target must visit a malicious web page.",
"id": "GHSA-5549-7vqp-pvxq",
"modified": "2024-04-04T02:36:40Z",
"published": "2022-05-24T17:00:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-17325"
},
{
"type": "WEB",
"url": "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=35184"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-554P-MPFQ-V2C5
Vulnerability from github – Published: 2022-06-14 00:00 – Updated: 2022-06-18 00:00The WP SVG Icons WordPress plugin through 3.2.3 does not properly validate uploaded custom icon packs, allowing an high privileged user like an admin to upload a zip file containing malicious php code, leading to remote code execution.
{
"affected": [],
"aliases": [
"CVE-2022-0863"
],
"database_specific": {
"cwe_ids": [
"CWE-434",
"CWE-94"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-13T13:15:00Z",
"severity": "HIGH"
},
"details": "The WP SVG Icons WordPress plugin through 3.2.3 does not properly validate uploaded custom icon packs, allowing an high privileged user like an admin to upload a zip file containing malicious php code, leading to remote code execution.",
"id": "GHSA-554p-mpfq-v2c5",
"modified": "2022-06-18T00:00:19Z",
"published": "2022-06-14T00:00:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0863"
},
{
"type": "WEB",
"url": "https://wpscan.com/vulnerability/a30212a0-c910-4657-aee1-4a2d72c77983"
}
],
"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-5568-W2QW-FRJ9
Vulnerability from github – Published: 2022-05-14 01:05 – Updated: 2022-05-14 01:05GAT-Ship Web Module before 1.40 suffers from a vulnerability allowing authenticated attackers to upload any file type to the server via the "Documents" area. This vulnerability is related to "uploadDocFile.aspx".
{
"affected": [],
"aliases": [
"CVE-2019-11028"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-04-09T14:29:00Z",
"severity": "HIGH"
},
"details": "GAT-Ship Web Module before 1.40 suffers from a vulnerability allowing authenticated attackers to upload any file type to the server via the \"Documents\" area. This vulnerability is related to \"uploadDocFile.aspx\".",
"id": "GHSA-5568-w2qw-frj9",
"modified": "2022-05-14T01:05:48Z",
"published": "2022-05-14T01:05:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11028"
},
{
"type": "WEB",
"url": "https://seclists.org/fulldisclosure/2019/Apr/14"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.133141"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/152643/GAT-Ship-Web-Module-Unrestricted-File-Upload.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2019/Apr/33"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-558G-H753-6M33
Vulnerability from github – Published: 2026-04-16 20:41 – Updated: 2026-06-08 19:54Impact
The project backup didn't filter Git and Mercurial configuration files and this could lead to remote code execution under certain circumstances.
Patches
- https://github.com/WeblateOrg/weblate/pull/18549
Workarounds
The project backup is only accessible to users who can create projects. Restricting access to this limits scope of the vulnerability.
References
This issue was reported by ggamno via HackerOne.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "Weblate"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.17"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-33435"
],
"database_specific": {
"cwe_ids": [
"CWE-23",
"CWE-434",
"CWE-94"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-16T20:41:38Z",
"nvd_published_at": "2026-04-15T19:16:35Z",
"severity": "HIGH"
},
"details": "### Impact\nThe project backup didn\u0027t filter Git and Mercurial configuration files and this could lead to remote code execution under certain circumstances.\n\n### Patches\n* https://github.com/WeblateOrg/weblate/pull/18549\n\n### Workarounds\nThe project backup is only accessible to users who can create projects. Restricting access to this limits scope of the vulnerability.\n\n### References\nThis issue was reported by [ggamno](https://hackerone.com/ggamno) via HackerOne.",
"id": "GHSA-558g-h753-6m33",
"modified": "2026-06-08T19:54:20Z",
"published": "2026-04-16T20:41:38Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/WeblateOrg/weblate/security/advisories/GHSA-558g-h753-6m33"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33435"
},
{
"type": "WEB",
"url": "https://github.com/WeblateOrg/weblate/pull/18549"
},
{
"type": "PACKAGE",
"url": "https://github.com/WeblateOrg/weblate"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/weblate/PYSEC-2026-154.yaml"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Weblate: Remote code execution during backup restoration"
}
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.