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.
5967 vulnerabilities reference this CWE, most recent first.
GHSA-2FH3-XG72-F7VX
Vulnerability from github – Published: 2022-05-24 17:40 – Updated: 2022-05-24 17:40FortiLogger 4.4.2.2 is affected by Arbitrary File Upload by sending a "Content-Type: image/png" header to Config/SaveUploadedHotspotLogoFile and then visiting Assets/temp/hotspot/img/logohotspot.asp.
{
"affected": [],
"aliases": [
"CVE-2021-3378"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-01T23:15:00Z",
"severity": "CRITICAL"
},
"details": "FortiLogger 4.4.2.2 is affected by Arbitrary File Upload by sending a \"Content-Type: image/png\" header to Config/SaveUploadedHotspotLogoFile and then visiting Assets/temp/hotspot/img/logohotspot.asp.",
"id": "GHSA-2fh3-xg72-f7vx",
"modified": "2022-05-24T17:40:45Z",
"published": "2022-05-24T17:40:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3378"
},
{
"type": "WEB",
"url": "https://github.com/erberkan/fortilogger_arbitrary_fileupload"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/161601/FortiLogger-4.4.2.2-Arbitrary-File-Upload.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/161974/FortiLogger-Arbitrary-File-Upload.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2FM9-5HWG-96CH
Vulnerability from github – Published: 2023-07-21 00:30 – Updated: 2023-07-21 00:30A vulnerability has been found in Chengdu Flash Flood Disaster Monitoring and Warning System 2.0 and classified as critical. This vulnerability affects unknown code of the file /App_Resource/UEditor/server/upload.aspx. The manipulation of the argument file leads to unrestricted upload. The exploit has been disclosed to the public and may be used. VDB-235066 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-2023-3798"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-20T22:15:10Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in Chengdu Flash Flood Disaster Monitoring and Warning System 2.0 and classified as critical. This vulnerability affects unknown code of the file /App_Resource/UEditor/server/upload.aspx. The manipulation of the argument file leads to unrestricted upload. The exploit has been disclosed to the public and may be used. VDB-235066 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-2fm9-5hwg-96ch",
"modified": "2023-07-21T00:30:23Z",
"published": "2023-07-21T00:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3798"
},
{
"type": "WEB",
"url": "https://github.com/RCEraser/cve/blob/main/wanjiang.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.235066"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.235066"
}
],
"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-2FQC-9M76-PPWC
Vulnerability from github – Published: 2025-03-28 21:30 – Updated: 2025-04-01 21:30InvoicePlane (all versions tested as of December 2024) v.1.6.11 and before contains a remote code execution vulnerability in the upload_file method of the Upload controller.
{
"affected": [],
"aliases": [
"CVE-2024-56975"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-28T21:15:17Z",
"severity": "CRITICAL"
},
"details": "InvoicePlane (all versions tested as of December 2024) v.1.6.11 and before contains a remote code execution vulnerability in the upload_file method of the Upload controller.",
"id": "GHSA-2fqc-9m76-ppwc",
"modified": "2025-04-01T21:30:46Z",
"published": "2025-03-28T21:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56975"
},
{
"type": "WEB",
"url": "https://github.com/InvoicePlane/InvoicePlane/pull/1127"
},
{
"type": "WEB",
"url": "https://github.com/InvoicePlane/InvoicePlane/pull/1166"
}
],
"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-2FQM-M4R2-FH98
Vulnerability from github – Published: 2023-06-06 16:46 – Updated: 2023-06-06 16:46Impact
Kiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced upload validators in order to prevent potentially dangerous files from being uploaded and Content-Security-Policy definition to prevent cross-site-scripting attacks.
The upload validation checks were not 100% robust which left the possibility to circumvent them and upload a potentially dangerous file which allows execution of arbitrary JavaScript in the browser. Additionally we've discovered that Nginx's proxy_pass directive will strip some headers negating protections built into Kiwi TCMS when served behind a reverse proxy.
Patches
- Improved file upload validation code
- Updated Nginx reverse proxy configuration for *.tenant.kiwitcms.org
Workarounds
If serving Kiwi TCMS behind a reverse proxy make sure that additional header values are still passed to the client browser. If they aren't redefine them inside the proxy configuration. See etc/nginx.conf#L66-L68 and etc/nginx.conf#L87
References
Disclosed by M Nadeem Qazi.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 12.3"
},
"package": {
"ecosystem": "PyPI",
"name": "kiwitcms"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "12.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-33977"
],
"database_specific": {
"cwe_ids": [
"CWE-434",
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2023-06-06T16:46:16Z",
"nvd_published_at": "2023-06-06T19:15:12Z",
"severity": "HIGH"
},
"details": "### Impact\n\nKiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced upload validators in order to prevent potentially dangerous files from being uploaded and Content-Security-Policy definition to prevent cross-site-scripting attacks. \n\nThe upload validation checks were not 100% robust which left the possibility to circumvent them and upload a potentially dangerous file which allows execution of arbitrary JavaScript in the browser. Additionally we\u0027ve discovered that Nginx\u0027s `proxy_pass` directive will strip some headers negating protections built into Kiwi TCMS when served behind a reverse proxy.\n\n### Patches\n\n- Improved file upload validation code\n- Updated Nginx reverse proxy configuration for ***.tenant.kiwitcms.org**\n\n### Workarounds\n\nIf serving Kiwi TCMS behind a reverse proxy make sure that additional header values are still passed to the client browser. If they aren\u0027t redefine them inside the proxy configuration. See [etc/nginx.conf#L66-L68](https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68) and [etc/nginx.conf#L87](https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87)\n\n### References\n\nDisclosed by [M Nadeem Qazi](https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96/).",
"id": "GHSA-2fqm-m4r2-fh98",
"modified": "2023-06-06T16:46:16Z",
"published": "2023-06-06T16:46:16Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33977"
},
{
"type": "WEB",
"url": "https://github.com/kiwitcms/kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034"
},
{
"type": "PACKAGE",
"url": "https://github.com/kiwitcms/Kiwi"
},
{
"type": "WEB",
"url": "https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68"
},
{
"type": "WEB",
"url": "https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96"
},
{
"type": "WEB",
"url": "https://kiwitcms.org/blog/kiwi-tcms-team/2023/06/06/kiwi-tcms-124"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "kiwitcms vulnerable to stored cross-site scripting via unrestricted file upload"
}
GHSA-2FQW-V698-338M
Vulnerability from github – Published: 2022-05-24 17:40 – Updated: 2022-05-24 17:40Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.
{
"affected": [],
"aliases": [
"CVE-2020-20287"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-01T18:15:00Z",
"severity": "CRITICAL"
},
"details": "Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function\u0027s improper judgment of the request parameters, triggers remote code execution.",
"id": "GHSA-2fqw-v698-338m",
"modified": "2022-05-24T17:40:43Z",
"published": "2022-05-24T17:40:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-20287"
},
{
"type": "WEB",
"url": "https://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image"
},
{
"type": "WEB",
"url": "http://www.yccms.net"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2FR7-WCM8-348V
Vulnerability from github – Published: 2022-05-24 17:40 – Updated: 2022-05-24 17:40A CWE-434: Unrestricted Upload of File with Dangerous Type vulnerability exists in the EcoStruxure Power Build - Rapsody software (V2.1.13 and prior) that could allow a stack-based buffer overflow to occur which could result in remote code execution when a malicious SSD file is uploaded and improperly parsed.
{
"affected": [],
"aliases": [
"CVE-2021-22698"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-01-26T18:16:00Z",
"severity": "HIGH"
},
"details": "A CWE-434: Unrestricted Upload of File with Dangerous Type vulnerability exists in the EcoStruxure Power Build - Rapsody software (V2.1.13 and prior) that could allow a stack-based buffer overflow to occur which could result in remote code execution when a malicious SSD file is uploaded and improperly parsed.",
"id": "GHSA-2fr7-wcm8-348v",
"modified": "2022-05-24T17:40:20Z",
"published": "2022-05-24T17:40:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22698"
},
{
"type": "WEB",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-012-01"
},
{
"type": "WEB",
"url": "https://www.se.com/ww/en/download/document/SEVD-2021-012-02"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-187"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2FVX-VHR6-R4CV
Vulnerability from github – Published: 2021-12-01 00:00 – Updated: 2021-12-01 00:00Unrestricted File Upload in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 in the File Upload Functions allows an authenticated remote attacker with Upload privileges to upload files with any file type, enabling client-side attacks.
{
"affected": [],
"aliases": [
"CVE-2021-42123"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-11-30T12:15:00Z",
"severity": "HIGH"
},
"details": "Unrestricted File Upload in Web Applications operating on Business-DNA Solutions GmbH\u00e2\u20ac\u2122s TopEase\u00c2\u00ae Platform Version \u003c= 7.1.27 in the File Upload Functions allows an authenticated remote attacker with Upload privileges to upload files with any file type, enabling client-side attacks.",
"id": "GHSA-2fvx-vhr6-r4cv",
"modified": "2021-12-01T00:00:41Z",
"published": "2021-12-01T00:00:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42123"
},
{
"type": "WEB",
"url": "https://confluence.topease.ch/confluence/display/DOC/Release+Notes"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2FW5-HCCH-P3CJ
Vulnerability from github – Published: 2025-03-01 15:30 – Updated: 2025-03-01 15:30A vulnerability has been found in Zorlan SkyCaiji 2.9 and classified as critical. This vulnerability affects the function fileAction of the file vendor/skycaiji/app/admin/controller/Tool.php. The manipulation of the argument save_data leads to unrestricted upload. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
{
"affected": [],
"aliases": [
"CVE-2025-1791"
],
"database_specific": {
"cwe_ids": [
"CWE-284",
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-01T14:15:34Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in Zorlan SkyCaiji 2.9 and classified as critical. This vulnerability affects the function fileAction of the file vendor/skycaiji/app/admin/controller/Tool.php. The manipulation of the argument save_data leads to unrestricted upload. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.",
"id": "GHSA-2fw5-hcch-p3cj",
"modified": "2025-03-01T15:30:50Z",
"published": "2025-03-01T15:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-1791"
},
{
"type": "WEB",
"url": "https://github.com/sheratan4/cve/issues/5"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.298012"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.298012"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.502648"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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-2FWX-CJ48-8QQF
Vulnerability from github – Published: 2023-03-28 18:30 – Updated: 2023-04-04 03:30An arbitrary file upload vulnerability in the Virtual Disk of MK-Auth 23.01K4.9 allows attackers to execute arbitrary code via uploading a crafted .htaccess file.
{
"affected": [],
"aliases": [
"CVE-2023-27246"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-28T18:15:00Z",
"severity": "HIGH"
},
"details": "An arbitrary file upload vulnerability in the Virtual Disk of MK-Auth 23.01K4.9 allows attackers to execute arbitrary code via uploading a crafted .htaccess file.",
"id": "GHSA-2fwx-cj48-8qqf",
"modified": "2023-04-04T03:30:16Z",
"published": "2023-03-28T18:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27246"
},
{
"type": "WEB",
"url": "https://github.com/IntruderLabs/2023-05-25-ziroudei/blob/main/README.md"
}
],
"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-2G29-443F-QWH2
Vulnerability from github – Published: 2022-08-12 00:01 – Updated: 2022-08-16 00:00A vulnerability was found in SourceCodester Company Website CMS and classified as critical. Affected by this issue is some unknown functionality of the file /dashboard/add-portfolio.php. The manipulation of the argument ufile leads to unrestricted upload. The attack may be launched remotely. The identifier of this vulnerability is VDB-206024.
{
"affected": [],
"aliases": [
"CVE-2022-2751"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-11T05:15:00Z",
"severity": "CRITICAL"
},
"details": "A vulnerability was found in SourceCodester Company Website CMS and classified as critical. Affected by this issue is some unknown functionality of the file /dashboard/add-portfolio.php. The manipulation of the argument ufile leads to unrestricted upload. The attack may be launched remotely. The identifier of this vulnerability is VDB-206024.",
"id": "GHSA-2g29-443f-qwh2",
"modified": "2022-08-16T00:00:25Z",
"published": "2022-08-12T00:01:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2751"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.206024"
}
],
"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"
}
]
}
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.