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-Q263-J3Q9-G964
Vulnerability from github – Published: 2022-05-13 01:24 – Updated: 2023-07-31 22:23October CMS build 412 is vulnerable to PHP code execution in the file upload functionality resulting in site compromise and possibly other applications on the server.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "october/cms"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.0.412"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2017-1000119"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-31T22:23:29Z",
"nvd_published_at": "2017-10-05T01:29:00Z",
"severity": "HIGH"
},
"details": "October CMS build 412 is vulnerable to PHP code execution in the file upload functionality resulting in site compromise and possibly other applications on the server.",
"id": "GHSA-q263-j3q9-g964",
"modified": "2023-07-31T22:23:29Z",
"published": "2022-05-13T01:24:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000119"
},
{
"type": "PACKAGE",
"url": "https://github.com/octobercms/october"
},
{
"type": "WEB",
"url": "http://octobercms.com/support/article/rn-8"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/154390/October-CMS-Upload-Protection-Bypass-Code-Execution.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "October CMS PHP Code Execution"
}
GHSA-Q26P-9RM7-92F4
Vulnerability from github – Published: 2022-05-24 16:48 – Updated: 2024-04-04 00:58madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs writes a decoded base64 string to a file without validating the extension.
{
"affected": [],
"aliases": [
"CVE-2019-9842"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-06-14T20:29:00Z",
"severity": "HIGH"
},
"details": "madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs writes a decoded base64 string to a file without validating the extension.",
"id": "GHSA-q26p-9rm7-92f4",
"modified": "2024-04-04T00:58:19Z",
"published": "2022-05-24T16:48:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9842"
},
{
"type": "WEB",
"url": "https://github.com/madskristensen/MiniBlog/blob/1a7ae45ddba484e2c8f808e288e018748c9ddb57/Website/app_code/handlers/PostHandler.cs#L85"
},
{
"type": "WEB",
"url": "https://rastating.github.io/miniblog-remote-code-execution"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q2PC-JFHQ-74Q4
Vulnerability from github – Published: 2022-05-14 03:23 – Updated: 2022-05-14 03:23** DISPUTED ** An issue was discovered on AXIS M1033-W (IP camera) Firmware version 5.40.5.1 devices. The upload web page doesn't verify the file type, and an attacker can upload a webshell by making a fileUpload.shtml request for a custom .shtml file, which is interpreted by the Apache HTTP Server mod_include module with "<!--#exec cmd=" support. The file needs to include a specific string to meet the internal system architecture. After the webshell upload, an attacker can use the webshell to perform remote code execution such as running a system command (ls, ping, cat /etc/passwd, etc.). NOTE: the vendor reportedly indicates that this is an intended feature or functionality.
{
"affected": [],
"aliases": [
"CVE-2018-9157"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-01T18:29:00Z",
"severity": "HIGH"
},
"details": "** DISPUTED ** An issue was discovered on AXIS M1033-W (IP camera) Firmware version 5.40.5.1 devices. The upload web page doesn\u0027t verify the file type, and an attacker can upload a webshell by making a fileUpload.shtml request for a custom .shtml file, which is interpreted by the Apache HTTP Server mod_include module with \"\u003c!--#exec cmd=\" support. The file needs to include a specific string to meet the internal system architecture. After the webshell upload, an attacker can use the webshell to perform remote code execution such as running a system command (ls, ping, cat /etc/passwd, etc.). NOTE: the vendor reportedly indicates that this is an intended feature or functionality.",
"id": "GHSA-q2pc-jfhq-74q4",
"modified": "2022-05-14T03:23:46Z",
"published": "2022-05-14T03:23:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-9157"
},
{
"type": "WEB",
"url": "https://www.slideshare.net/secret/pRWQOOe6rN8Iyb"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q2V9-7453-3JWF
Vulnerability from github – Published: 2025-08-01 18:31 – Updated: 2025-08-04 18:30Emlog Pro V2.5.7 is vulnerable to Unrestricted Upload of File with Dangerous Type via /emlog/admin/plugin.php?action=upload_zip
{
"affected": [],
"aliases": [
"CVE-2025-44139"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-01T16:15:41Z",
"severity": "HIGH"
},
"details": "Emlog Pro V2.5.7 is vulnerable to Unrestricted Upload of File with Dangerous Type via /emlog/admin/plugin.php?action=upload_zip",
"id": "GHSA-q2v9-7453-3jwf",
"modified": "2025-08-04T18:30:33Z",
"published": "2025-08-01T18:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-44139"
},
{
"type": "WEB",
"url": "https://gist.github.com/babapihai/b56121e0b2694e2be22571057d05298e"
},
{
"type": "WEB",
"url": "http://emlog.com"
}
],
"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-Q2X2-4CF5-F275
Vulnerability from github – Published: 2022-05-14 01:50 – Updated: 2022-05-14 01:50Unauthenticated arbitrary file upload vulnerability in jQuery Picture Cut <= v1.1Beta
{
"affected": [],
"aliases": [
"CVE-2018-9208"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-11-05T13:29:00Z",
"severity": "CRITICAL"
},
"details": "Unauthenticated arbitrary file upload vulnerability in jQuery Picture Cut \u003c= v1.1Beta",
"id": "GHSA-q2x2-4cf5-f275",
"modified": "2022-05-14T01:50:42Z",
"published": "2022-05-14T01:50:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-9208"
},
{
"type": "WEB",
"url": "http://www.vapidlabs.com/advisory.php?v=207"
}
],
"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-Q322-HRH5-626C
Vulnerability from github – Published: 2023-10-27 03:30 – Updated: 2023-10-27 03:30A vulnerability has been found in flusity CMS and classified as critical. Affected by this vulnerability is the function handleFileUpload of the file core/tools/upload.php. The manipulation of the argument uploaded_file leads to unrestricted upload. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The associated identifier of this vulnerability is VDB-243643.
{
"affected": [],
"aliases": [
"CVE-2023-5812"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-27T02:15:07Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in flusity CMS and classified as critical. Affected by this vulnerability is the function handleFileUpload of the file core/tools/upload.php. The manipulation of the argument uploaded_file leads to unrestricted upload. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The associated identifier of this vulnerability is VDB-243643.",
"id": "GHSA-q322-hrh5-626c",
"modified": "2023-10-27T03:30:20Z",
"published": "2023-10-27T03:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5812"
},
{
"type": "WEB",
"url": "https://github.com/flusity/flusity-CMS/issues/4"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.243643"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.243643"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-Q346-H3VJ-6V27
Vulnerability from github – Published: 2025-12-04 21:31 – Updated: 2025-12-08 18:30The E-POINT CMS eagle.gsam-1169.1 file upload feature improperly handles nested archive files. An attacker can upload a nested ZIP (a ZIP containing another ZIP) where the inner archive contains an executable file (e.g. webshell.php). When the application extracts the uploaded archives, the executable may be extracted into a web-accessible directory. This can lead to remote code execution (RCE), data disclosure, account compromise, or further system compromise depending on the web server/process privileges. The issue arises from insufficient validation of archive contents and inadequate restrictions on extraction targets.
{
"affected": [],
"aliases": [
"CVE-2025-65806"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-04T20:16:19Z",
"severity": "HIGH"
},
"details": "The E-POINT CMS eagle.gsam-1169.1 file upload feature improperly handles nested archive files. An attacker can upload a nested ZIP (a ZIP containing another ZIP) where the inner archive contains an executable file (e.g. webshell.php). When the application extracts the uploaded archives, the executable may be extracted into a web-accessible directory. This can lead to remote code execution (RCE), data disclosure, account compromise, or further system compromise depending on the web server/process privileges. The issue arises from insufficient validation of archive contents and inadequate restrictions on extraction targets.",
"id": "GHSA-q346-h3vj-6v27",
"modified": "2025-12-08T18:30:26Z",
"published": "2025-12-04T21:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-65806"
},
{
"type": "WEB",
"url": "https://github.com/Bidon47/CVE-2025-65806/blob/main/CVE-2025-65806.md"
},
{
"type": "WEB",
"url": "https://www.e-point.pl/produkty/e-point-cms"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q347-JRX8-5PW9
Vulnerability from github – Published: 2023-07-16 03:30 – Updated: 2023-07-17 10:50Unrestricted Upload of File with Dangerous Type in GitHub repository admidio/admidio prior to 4.2.10.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "admidio/admidio"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.2.10"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-3692"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-17T10:50:54Z",
"nvd_published_at": "2023-07-16T01:15:09Z",
"severity": "MODERATE"
},
"details": "Unrestricted Upload of File with Dangerous Type in GitHub repository admidio/admidio prior to 4.2.10.",
"id": "GHSA-q347-jrx8-5pw9",
"modified": "2023-07-17T10:50:54Z",
"published": "2023-07-16T03:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3692"
},
{
"type": "WEB",
"url": "https://github.com/admidio/admidio/commit/d66585d14b1160712a8a9bfaf9769dd3da0e9a83"
},
{
"type": "PACKAGE",
"url": "https://github.com/admidio/admidio"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/be6616eb-384d-40d6-b1fd-0ec9e4973f12"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
}
],
"summary": "Admidio vulnerable to Unrestricted Upload of File with Dangerous Type"
}
GHSA-Q34Q-RP37-4PJQ
Vulnerability from github – Published: 2022-05-24 16:58 – Updated: 2022-05-24 16:58The dzs-zoomsounds plugin through 2.0 for WordPress has admin/upload.php arbitrary file upload.
{
"affected": [],
"aliases": [
"CVE-2015-9471"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-10-10T17:15:00Z",
"severity": "CRITICAL"
},
"details": "The dzs-zoomsounds plugin through 2.0 for WordPress has admin/upload.php arbitrary file upload.",
"id": "GHSA-q34q-rp37-4pjq",
"modified": "2022-05-24T16:58:24Z",
"published": "2022-05-24T16:58:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-9471"
},
{
"type": "WEB",
"url": "https://packetstormsecurity.com/files/132124"
},
{
"type": "WEB",
"url": "https://wordpress.org/plugins/dzs-zoomsounds/#developers"
},
{
"type": "WEB",
"url": "https://wpvulndb.com/vulnerabilities/8019"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-Q35V-85F7-HFPH
Vulnerability from github – Published: 2025-12-11 00:30 – Updated: 2025-12-16 15:30WBCE CMS version 1.6.2 contains a remote code execution vulnerability that allows authenticated attackers to upload malicious PHP files through the Elfinder file manager. Attackers can exploit the file upload functionality in the elfinder connector to upload a web shell and execute arbitrary system commands through a user-controlled parameter.
{
"affected": [],
"aliases": [
"CVE-2024-58283"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-10T22:16:20Z",
"severity": "HIGH"
},
"details": "WBCE CMS version 1.6.2 contains a remote code execution vulnerability that allows authenticated attackers to upload malicious PHP files through the Elfinder file manager. Attackers can exploit the file upload functionality in the elfinder connector to upload a web shell and execute arbitrary system commands through a user-controlled parameter.",
"id": "GHSA-q35v-85f7-hfph",
"modified": "2025-12-16T15:30:31Z",
"published": "2025-12-11T00:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-58283"
},
{
"type": "WEB",
"url": "https://github.com/WBCE/WBCE_CMS/archive/refs/tags/1.6.2.zip"
},
{
"type": "WEB",
"url": "https://wbce-cms.org"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/52039"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/wbce-cms-remote-code-execution-via-elfinder-file-upload"
}
],
"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"
},
{
"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/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"
}
]
}
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.