CWE-434
Unrestricted Upload of File with Dangerous Type
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
CVE-2026-28289 (GCVE-0-2026-28289)
Vulnerability from cvelistv5 – Published: 2026-03-03 22:59 – Updated: 2026-03-05 21:09
VLAI
Title
FreeScout 1.8.206 Patch Bypass for CVE-2026-27636 via Zero-Width Space Character Leads to Remote Code Execution
Summary
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. A patch bypass vulnerability for CVE-2026-27636 in FreeScout 1.8.206 and earlier allows any authenticated user with file upload permissions to achieve Remote Code Execution (RCE) on the server by uploading a malicious .htaccess file using a zero-width space character prefix to bypass the security check. The vulnerability exists in the sanitizeUploadedFileName() function in app/Http/Helper.php. The function contains a Time-of-Check to Time-of-Use (TOCTOU) flaw where the dot-prefix check occurs before sanitization removes invisible characters. This vulnerability is fixed in 1.8.207.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/freescout-help-desk/freescout/… | x_refsource_CONFIRM |
| https://github.com/freescout-help-desk/freescout/… | x_refsource_MISC |
| https://www.ox.security/blog/freescout-rce-cve-20… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| freescout-help-desk | freescout |
Affected:
< 1.8.207
|
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CVE-2026-28502 (GCVE-0-2026-28502)
Vulnerability from cvelistv5 – Published: 2026-03-06 03:04 – Updated: 2026-03-06 16:10
VLAI
Title
WWBN AVideo: Authenticated Remote Code Execution via Unsafe Plugin ZIP Extraction
Summary
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/WWBN/AVideo/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/WWBN/AVideo/commit/b739aeeb9ce… | x_refsource_MISC |
| https://github.com/WWBN/AVideo/releases/tag/24.0 | x_refsource_MISC |
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CVE-2026-28673 (GCVE-0-2026-28673)
Vulnerability from cvelistv5 – Published: 2026-03-18 00:41 – Updated: 2026-03-18 14:34
VLAI
Title
xiaoheiFS Vulnerable to RCE via Unrestricted Plugin Installation (Manifest Manipulation)
Summary
xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. In versions up to and including 0.3.15, the standard plugin system allows admins to upload a ZIP file containing a binary and a `manifest.json`. The server trusts the `binaries` field in the manifest and executes the specified file without any validation of its contents or behavior, leading to Remote Code Execution (RCE). Version 0.4.0 fixes the issue.
Severity
7.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/danvei233/xiaoheiFS/security/a… | x_refsource_CONFIRM |
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CVE-2026-28674 (GCVE-0-2026-28674)
Vulnerability from cvelistv5 – Published: 2026-03-18 00:48 – Updated: 2026-03-18 14:34
VLAI
Title
xiaoheiFS Vulnerable to RCE via Arbitrary Payment Plugin Upload (Automatic Execution)
Summary
xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. In versions up to and including 0.3.15, the `AdminPaymentPluginUpload` endpoint lets admins upload any file to `plugins/payment/`. It only checks a hardcoded password (`qweasd123456`) and ignores file content. A background watcher (`StartWatcher`) then scans this folder every 5 seconds. If it finds a new executable, it runs it immediately, resulting in RCE. Version 4.0.0 fixes the issue.
Severity
7.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/danvei233/xiaoheiFS/security/a… | x_refsource_CONFIRM |
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CVE-2026-28800 (GCVE-0-2026-28800)
Vulnerability from cvelistv5 – Published: 2026-03-06 06:42 – Updated: 2026-03-06 16:05
VLAI
Title
Natro Macro: Malicious actions allowed through Discord RC Commands by any user
Summary
Natro Macro is an open-source Bee Swarm Simulator macro written in AutoHotkey. Prior to version 1.1.0, anyone with Discord Remote Control set up in a non-private channel gives access to any user with the permission to send message in said channel access to do anything on their computer. This includes keyboard and mouse inputs and full file access. This issue has been patched in version 1.1.0.
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/NatroTeam/NatroMacro/security/… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NatroTeam | NatroMacro |
Affected:
< 1.1.0
|
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CVE-2026-29041 (GCVE-0-2026-29041)
Vulnerability from cvelistv5 – Published: 2026-03-06 03:32 – Updated: 2026-03-06 16:09
VLAI
Title
Chamilo: Authenticated Remote Code Execution via Unrestricted File Upload
Summary
Chamilo is a learning management system. Prior to version 1.11.34, Chamilo LMS is affected by an authenticated remote code execution vulnerability caused by improper validation of uploaded files. The application relies solely on MIME-type verification when handling file uploads and does not adequately validate file extensions or enforce safe server-side storage restrictions. As a result, an authenticated low-privileged user can upload a crafted file containing executable code and subsequently execute arbitrary commands on the server. This issue has been patched in version 1.11.34.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/chamilo/chamilo-lms/security/a… | x_refsource_CONFIRM |
| https://github.com/chamilo/chamilo-lms/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| chamilo | chamilo-lms |
Affected:
< 1.11.34
|
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CVE-2026-29104 (GCVE-0-2026-29104)
Vulnerability from cvelistv5 – Published: 2026-03-19 22:55 – Updated: 2026-03-21 03:09
VLAI
Title
SuiteCRM Vulnerable to Authenticated Arbitrary File Upload via Configurator addfontresult View in SuiteCRM
Summary
SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to versions 7.15.1 and 8.9.3, SuiteCRM contains an authenticated arbitrary file upload vulnerability in the Configurator module. An authenticated administrator can bypass intended file type restrictions when uploading PDF font files, allowing arbitrary files with attacker‑controlled filenames to be written to the server. Although the upload directory is not directly web‑accessible by default, this behavior breaks security boundaries and may enable further attacks when combined with other vulnerabilities or in certain deployment configurations. Versions 7.15.1 and 8.9.3 patch the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/SuiteCRM/SuiteCRM/security/adv… | x_refsource_CONFIRM |
| https://docs.suitecrm.com/admin/releases/7.15.x | x_refsource_MISC |
Impacted products
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CVE-2026-29186 (GCVE-0-2026-29186)
Vulnerability from cvelistv5 – Published: 2026-03-07 15:03 – Updated: 2026-03-09 20:24
VLAI
Title
@backstage/plugin-techdocs-node: TechDocs Mkdocs Configuration Key Enables Arbitrary Code Execution
Summary
Backstage is an open framework for building developer portals. Prior to version 1.14.3, this is a configuration bypass vulnerability that enables arbitrary code execution. The @backstage/plugin-techdocs-node package uses an allowlist to filter dangerous MkDocs configuration keys during the documentation build process. A gap in this allowlist allows attackers to craft an mkdocs.yml that causes arbitrary Python code execution, completely bypassing TechDocs' security controls. This issue has been patched in version 1.14.3.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/backstage/backstage/security/a… | x_refsource_CONFIRM |
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CVE-2026-2942 (GCVE-0-2026-2942)
Vulnerability from cvelistv5 – Published: 2026-04-08 17:25 – Updated: 2026-04-08 19:22
VLAI
Title
ProSolution WP Client <= 1.9.9 - Unauthenticated Arbitrary File Upload via proSol_fileUploadProcess
Summary
The ProSolution WP Client plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'proSol_fileUploadProcess' function in all versions up to, and including, 1.9.9. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| prosolution | ProSolution WP Client |
Affected:
0 , ≤ 1.9.9
(semver)
|
Credits
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CVE-2026-2977 (GCVE-0-2026-2977)
Vulnerability from cvelistv5 – Published: 2026-02-23 07:02 – Updated: 2026-02-23 13:18
VLAI
Title
FastApiAdmin Scheduled Task API controller.py upload_controller unrestricted upload
Summary
A security vulnerability has been detected in FastApiAdmin up to 2.2.0. This affects the function upload_controller of the file /backend/app/api/v1/module_common/file/controller.py of the component Scheduled Task API. Such manipulation leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.347361 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.347361 | signaturepermissions-required |
| https://vuldb.com/?submit.756144 | third-party-advisory |
| https://github.com/CC-T-454455/Vulnerabilities/tr… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | FastApiAdmin |
Affected:
2.0
Affected: 2.1 Affected: 2.2.0 |
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"other": {
"content": {
"id": "CVE-2026-2977",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
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"role": "CISA Coordinator",
"timestamp": "2026-02-23T13:18:32.229509Z",
"version": "2.0.3"
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"dateUpdated": "2026-02-23T13:18:42.686Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"modules": [
"Scheduled Task API"
],
"product": "FastApiAdmin",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "2.0"
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{
"status": "affected",
"version": "2.1"
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{
"status": "affected",
"version": "2.2.0"
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"descriptions": [
{
"lang": "en",
"value": "A security vulnerability has been detected in FastApiAdmin up to 2.2.0. This affects the function upload_controller of the file /backend/app/api/v1/module_common/file/controller.py of the component Scheduled Task API. Such manipulation leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "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",
"version": "4.0"
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},
{
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"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.1"
}
},
{
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"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
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"baseScore": 6.5,
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-434",
"description": "Unrestricted Upload",
"lang": "en",
"type": "CWE"
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]
},
{
"descriptions": [
{
"cweId": "CWE-284",
"description": "Improper Access Controls",
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}
],
"providerMetadata": {
"dateUpdated": "2026-02-23T07:02:06.897Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
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"references": [
{
"name": "VDB-347361 | FastApiAdmin Scheduled Task API controller.py upload_controller unrestricted upload",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/?id.347361"
},
{
"name": "VDB-347361 | CTI Indicators (IOB, IOC, TTP, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/?ctiid.347361"
},
{
"name": "Submit #756144 | fastapiadmin \u003c= 2.2.0 Unrestricted Upload",
"tags": [
"third-party-advisory"
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"url": "https://vuldb.com/?submit.756144"
},
{
"tags": [
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"url": "https://github.com/CC-T-454455/Vulnerabilities/tree/master/fastapi-admin/vulnerability-3"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-02-22T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-02-22T01:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-02-22T16:14:21.000Z",
"value": "VulDB entry last update"
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],
"title": "FastApiAdmin Scheduled Task API controller.py upload_controller unrestricted upload"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-2977",
"datePublished": "2026-02-23T07:02:06.897Z",
"dateReserved": "2026-02-22T15:09:07.919Z",
"dateUpdated": "2026-02-23T13:18:42.686Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Phase: Architecture and Design
Description:
- 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 ID: MIT-21
Phase: Architecture and Design
Strategy: Enforcement by Conversion
Description:
- 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
Phase: Architecture and Design
Description:
- Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically. [REF-423]
Mitigation ID: MIT-5
Phase: Implementation
Strategy: Input Validation
Description:
- 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
Phase: Architecture and Design
Description:
- 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
Phase: Implementation
Strategy: Input Validation
Description:
- 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
Phase: Implementation
Description:
- When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
Mitigation ID: MIT-15
Phase: Architecture and Design
Description:
- 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
Phase: Implementation
Description:
- 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
Phase: Implementation
Description:
- 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 ID: MIT-17
Phases: Architecture and Design, Operation
Strategy: Environment Hardening
Description:
- 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 ID: MIT-22
Phases: Architecture and Design, Operation
Strategy: Sandbox or Jail
Description:
- 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.