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.
6061 vulnerabilities reference this CWE, most recent first.
GHSA-JWMG-WM4J-MR52
Vulnerability from github – Published: 2025-07-07 03:30 – Updated: 2025-07-07 03:30A vulnerability was found in BoyunCMS up to 1.4.20 and classified as critical. Affected by this issue is some unknown functionality of the file /application/user/controller/Index.php. The manipulation of the argument image leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
{
"affected": [],
"aliases": [
"CVE-2025-7100"
],
"database_specific": {
"cwe_ids": [
"CWE-284",
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-07T01:15:22Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in BoyunCMS up to 1.4.20 and classified as critical. Affected by this issue is some unknown functionality of the file /application/user/controller/Index.php. The manipulation of the argument image leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.",
"id": "GHSA-jwmg-wm4j-mr52",
"modified": "2025-07-07T03:30:22Z",
"published": "2025-07-07T03:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7100"
},
{
"type": "WEB",
"url": "https://note-hxlab.wetolink.com/share/KLjaD7oBzCSp"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.315014"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.315014"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.604455"
}
],
"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:P/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-JWMH-M92H-24JX
Vulnerability from github – Published: 2025-05-06 00:31 – Updated: 2025-05-06 00:31A vulnerability, which was classified as critical, was found in IdeaCMS up to 1.6. Affected is the function saveUpload. The manipulation leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
{
"affected": [],
"aliases": [
"CVE-2025-4291"
],
"database_specific": {
"cwe_ids": [
"CWE-284",
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-05T22:15:17Z",
"severity": "MODERATE"
},
"details": "A vulnerability, which was classified as critical, was found in IdeaCMS up to 1.6. Affected is the function saveUpload. The manipulation leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.",
"id": "GHSA-jwmh-m92h-24jx",
"modified": "2025-05-06T00:31:05Z",
"published": "2025-05-06T00:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4291"
},
{
"type": "WEB",
"url": "https://gitee.com/ideacms/ideacms/issues/IC32SB"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.307398"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.307398"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.563522"
}
],
"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-JWQC-3F2X-PG44
Vulnerability from github – Published: 2022-05-14 01:14 – Updated: 2022-05-14 01:14An issue was discovered in flatCore 1.4.7. acp/acp.php allows remote authenticated administrators to upload arbitrary .php files, related to the addons feature.
{
"affected": [],
"aliases": [
"CVE-2019-10652"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-03-30T14:29:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in flatCore 1.4.7. acp/acp.php allows remote authenticated administrators to upload arbitrary .php files, related to the addons feature.",
"id": "GHSA-jwqc-3f2x-pg44",
"modified": "2022-05-14T01:14:30Z",
"published": "2022-05-14T01:14:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-10652"
},
{
"type": "WEB",
"url": "https://github.com/flatCore/flatCore-CMS/issues/38"
}
],
"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-JWQJ-7C2Q-9FFR
Vulnerability from github – Published: 2025-02-10 18:30 – Updated: 2025-02-19 21:31An arbitrary file upload vulnerability in the component /userPicture of Timo v2.0.3 allows attackers to execute arbitrary code via uploading a crafted file.
{
"affected": [],
"aliases": [
"CVE-2024-57407"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-10T18:15:33Z",
"severity": "HIGH"
},
"details": "An arbitrary file upload vulnerability in the component /userPicture of Timo v2.0.3 allows attackers to execute arbitrary code via uploading a crafted file.",
"id": "GHSA-jwqj-7c2q-9ffr",
"modified": "2025-02-19T21:31:36Z",
"published": "2025-02-10T18:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57407"
},
{
"type": "WEB",
"url": "https://gist.github.com/kaoniniang2/71f6a39535490ea2eeac371f33faec9c"
},
{
"type": "WEB",
"url": "https://gitee.com/aun/Timo/issues/IBBTZI"
}
],
"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:N",
"type": "CVSS_V3"
}
]
}
GHSA-JX2Q-HVWW-224R
Vulnerability from github – Published: 2022-12-22 21:30 – Updated: 2025-04-15 15:30When downloading an HTML file, if the title of the page was formatted as a filename with a malicious extension, Firefox may have saved the file with that extension, leading to possible system compromise if the downloaded file was later ran. This vulnerability affects Firefox < 107.
{
"affected": [],
"aliases": [
"CVE-2022-45415"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-22T20:15:00Z",
"severity": "HIGH"
},
"details": "When downloading an HTML file, if the title of the page was formatted as a filename with a malicious extension, Firefox may have saved the file with that extension, leading to possible system compromise if the downloaded file was later ran. This vulnerability affects Firefox \u003c 107.",
"id": "GHSA-jx2q-hvww-224r",
"modified": "2025-04-15T15:30:36Z",
"published": "2022-12-22T21:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45415"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1793551"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2022-47"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JX5Q-P685-XRCC
Vulnerability from github – Published: 2022-05-14 03:06 – Updated: 2022-05-14 03:06An issue was discovered in HongCMS 3.0.0. There is an Arbitrary Script File Upload issue that can result in PHP code execution via the admin/index.php/template/upload URI.
{
"affected": [],
"aliases": [
"CVE-2018-13021"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-06-29T17:29:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in HongCMS 3.0.0. There is an Arbitrary Script File Upload issue that can result in PHP code execution via the admin/index.php/template/upload URI.",
"id": "GHSA-jx5q-p685-xrcc",
"modified": "2022-05-14T03:06:10Z",
"published": "2022-05-14T03:06:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-13021"
},
{
"type": "WEB",
"url": "https://github.com/Neeke/HongCMS/issues/5"
}
],
"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-JX89-9M5W-HCFC
Vulnerability from github – Published: 2022-01-16 00:00 – Updated: 2022-01-22 00:01The files_antivirus component before 1.0.0 for ownCloud mishandles the protection mechanism by which malicious files (that have been uploaded to a public share) are supposed to be deleted upon detection.
{
"affected": [],
"aliases": [
"CVE-2021-33828"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-01-15T21:15:00Z",
"severity": "HIGH"
},
"details": "The files_antivirus component before 1.0.0 for ownCloud mishandles the protection mechanism by which malicious files (that have been uploaded to a public share) are supposed to be deleted upon detection.",
"id": "GHSA-jx89-9m5w-hcfc",
"modified": "2022-01-22T00:01:42Z",
"published": "2022-01-16T00:00:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33828"
},
{
"type": "WEB",
"url": "https://doc.owncloud.com/server/admin_manual/release_notes.html"
},
{
"type": "WEB",
"url": "https://owncloud.com/security-advisories/cve-2021-33828"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-JXG9-2CH7-F552
Vulnerability from github – Published: 2022-07-28 00:00 – Updated: 2022-08-06 05:31An arbitrary file upload vulnerability in the Advertising Management module of Feehi CMS v2.1.1 allows attackers to execute arbitrary code via a crafted PHP file.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "feehi/cms"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "2.1.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-34971"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": true,
"github_reviewed_at": "2022-08-06T05:31:43Z",
"nvd_published_at": "2022-07-27T02:15:00Z",
"severity": "HIGH"
},
"details": "An arbitrary file upload vulnerability in the Advertising Management module of Feehi CMS v2.1.1 allows attackers to execute arbitrary code via a crafted PHP file.",
"id": "GHSA-jxg9-2ch7-f552",
"modified": "2022-08-06T05:31:43Z",
"published": "2022-07-28T00:00:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-34971"
},
{
"type": "WEB",
"url": "https://github.com/liufee/cms/issues/62"
},
{
"type": "PACKAGE",
"url": "https://github.com/liufee/cms"
}
],
"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"
}
],
"summary": "Feehi CMS arbitrary code execution via crafted PHP file"
}
GHSA-JXG9-387C-H784
Vulnerability from github – Published: 2022-05-24 16:50 – Updated: 2024-04-04 01:18Code42 Enterprise and Crashplan for Small Business Client version 6.7 before 6.7.5, 6.8 before 6.8.8, and 6.9 before 6.9.4 allows eval injection. A proxy auto-configuration file, crafted by a lesser privileged user, may be used to execute arbitrary code at a higher privilege as the service user.
{
"affected": [],
"aliases": [
"CVE-2019-11552"
],
"database_specific": {
"cwe_ids": [
"CWE-434",
"CWE-94"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-19T14:15:00Z",
"severity": "HIGH"
},
"details": "Code42 Enterprise and Crashplan for Small Business Client version 6.7 before 6.7.5, 6.8 before 6.8.8, and 6.9 before 6.9.4 allows eval injection. A proxy auto-configuration file, crafted by a lesser privileged user, may be used to execute arbitrary code at a higher privilege as the service user.",
"id": "GHSA-jxg9-387c-h784",
"modified": "2024-04-04T01:18:59Z",
"published": "2022-05-24T16:50:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11552"
},
{
"type": "WEB",
"url": "https://bordplate.no/blog/en/post/crashplan-privilege-escalation"
},
{
"type": "WEB",
"url": "https://code42.com/r/support/CVE-2019-11552"
},
{
"type": "WEB",
"url": "https://support.code42.com/Terms_and_conditions/Code42_customer_support_resources/Code42_security_advisories/Untrusted_data_is_executed_as_System_via_a_PAC_file_read_by_CrashPlanService.exe"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JXJ8-FMV2-MQM5
Vulnerability from github – Published: 2025-07-21 06:31 – Updated: 2025-07-21 09:33WinMatrix3 Web package developed by Simopro Technology has an Arbitrary File Upload vulnerability, allowing remote attackers with administrator privileges to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
{
"affected": [],
"aliases": [
"CVE-2025-7917"
],
"database_specific": {
"cwe_ids": [
"CWE-434"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-21T06:15:28Z",
"severity": "HIGH"
},
"details": "WinMatrix3 Web package developed by Simopro Technology has an Arbitrary File Upload vulnerability, allowing remote attackers with administrator privileges to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.",
"id": "GHSA-jxj8-fmv2-mqm5",
"modified": "2025-07-21T09:33:26Z",
"published": "2025-07-21T06:31:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7917"
},
{
"type": "WEB",
"url": "https://www.twcert.org.tw/en/cp-139-10263-5f2e7-2.html"
},
{
"type": "WEB",
"url": "https://www.twcert.org.tw/tw/cp-132-10258-16bbf-1.html"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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.