Common Weakness Enumeration
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.
6247 vulnerabilities reference this CWE, most recent first.
CVE-2026-72762 (GCVE-0-2026-72762)
Vulnerability from cvelistv5 – Published: 2026-08-11 12:17 – Updated: 2026-08-11 15:01
VLAI
EPSS
VEX
Title
n8n before 1.123.67 Arbitrary File Write via Edit Image Node
Summary
n8n versions before 1.123.67, 2.31.5, and 2.32.1 contain an arbitrary file write vulnerability in the Edit Image node, which passes its output format parameter to the underlying image library without validation. An authenticated user able to run workflows can supply a crafted format value to write arbitrary files outside the node's working directory on the n8n instance.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:01 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories… | vendor-advisory |
| https://www.vulncheck.com/advisories/n8n-before-a… | third-party-advisory |
Impacted products
Date Public
2026-07-22 00:00
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CVE-2026-72592 (GCVE-0-2026-72592)
Vulnerability from cvelistv5 – Published: 2026-08-10 10:41 – Updated: 2026-08-10 13:24
VLAI
EPSS
VEX
Title
dulldusk phpfm - Unauthenticated Remote Code Execution via Unrestricted PHP File Upload
Summary
An unrestricted file upload vulnerability in dulldusk/phpfm through 1.8.0 allows an unauthenticated remote attacker to execute arbitrary PHP code on the server. The application ships with an empty upload extension filter ( = array) and no authentication enabled by default (auth_pass is empty string), allowing an unauthenticated attacker to upload a PHP webshell and execute it by browsing to the uploaded path.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 13:24 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/dulldusk/phpfm | third-party-advisory |
| https://github.com/dulldusk/phpfm/blob/master/index.php | technical-description |
Date Public
2026-08-10 10:32
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CVE-2026-72557 (GCVE-0-2026-72557)
Vulnerability from cvelistv5 – Published: 2026-08-11 11:11 – Updated: 2026-08-11 15:18
VLAI
EPSS
VEX
Title
Cockpit CMS Cockpit CMS - Unrestricted File Upload
Summary
An unrestricted file upload vulnerability in Cockpit CMS 2.6.0 allows authenticated users to upload files of any extension including PHP scripts via the asset upload endpoint. The allowed_uploads configuration defaults to wildcard (*) and uploaded files are stored in a web-accessible directory. An attacker with any authenticated account can upload a PHP webshell and execute arbitrary OS commands on the server.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:18 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cockpit CMS | Cockpit CMS |
Affected:
0 , ≤ 2.6.0
(custom)
|
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CVE-2026-71434 (GCVE-0-2026-71434)
Vulnerability from cvelistv5 – Published: 2026-08-06 19:34 – Updated: 2026-08-07 17:09
VLAI
EPSS
VEX
Title
Statamic: Missing file upload validation on frontend forms allows uploading disallowed file types
Summary
Statamic is a Laravel and Git powered content management system (CMS). Prior to 5.74.3 and 6.24.2, public frontend forms did not enforce the file upload restrictions that the Control Panel enforces, so an unauthenticated visitor could upload file types an administrator had intended to disallow through a form's assets or files field, and for assets fields, files could be stored on a public, web-accessible disk, though the application's global upload allowlist still blocked executable types such as .php and .html. This issue is fixed in versions 5.74.3 and 6.24.2.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 15:26 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/statamic/cms/security/advisori… | x_refsource_CONFIRM |
| https://github.com/statamic/cms/pull/14958 | x_refsource_MISC |
| https://github.com/statamic/cms/commit/8be7b6c961… | x_refsource_MISC |
| https://github.com/statamic/cms/releases/tag/v5.74.3 | x_refsource_MISC |
| https://github.com/statamic/cms/releases/tag/v6.24.2 | x_refsource_MISC |
Impacted products
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CVE-2026-70558 (GCVE-0-2026-70558)
Vulnerability from cvelistv5 – Published: 2026-08-06 19:30 – Updated: 2026-08-14 16:51
VLAI
EPSS
VEX
Title
Dinky Unauthenticated Arbitrary File Write via /download/uploadFromRsByLocal Gated Only by Hardcoded Default Token
Summary
Dinky's POST /download/uploadFromRsByLocal handler passes the caller-supplied path parameter directly to new File(path) and file.transferTo(dest) with no path validation. The route is marked @SaIgnore and /download/** is excluded from the Sa-Token interceptor, so the only guard is a header equality check against a dinkyToken value whose default (efda1551-7958-4e0f-80a8-dfd107df3e38) is hardcoded in source and shipped to every deployment. Anyone who can reach Dinky's HTTP port (8888 by default) and supplies the hardcoded token can write arbitrary files as the Dinky service account. The default Docker image runs on 8888 with no proxy or authentication and chmod 777 on /opt/dinky, so the application's own classpath, launch scripts, and static assets are writable. Demonstrated impact: overwriting /opt/dinky/config/static/index.html served attacker JavaScript to admin browsers immediately, and writing /opt/dinky/org/dinky/Dinky.class executed attacker code as the Dinky service account at the next JVM start via a classpath-shadow launched by script/bin/auto.sh. Writes are uid 9999 (flink), not root, so /etc, /root, /home, and /usr are refused. Affects Dinky v1.2.5 (the current release) and the development branch, where the code is byte-identical.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-08 02:29 UTC
CWE
- CWE-434 - Unrestricted upload of file with dangerous type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/DataLinkDC/dinky | product |
| https://github.com/DataLinkDC/dinky/issues/4566 | technical-description |
| https://github.com/DataLinkDC/dinky/security/advi… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| DataLinkDC | Dinky |
Affected:
0 , ≤ 1.2.5
(semver)
cpe:2.3:a:dinky:dinky:*:*:*:*:*:*:*:* |
Date Public
2026-08-06 19:30
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CVE-2026-68899 (GCVE-0-2026-68899)
Vulnerability from cvelistv5 – Published: 2026-08-19 19:26 – Updated: 2026-08-21 21:49
VLAI
EPSS
VEX
Title
Wekan: File Upload MIME Type Validation Bypass — Stored XSS via Missing System Binary Fallback
Summary
Wekan is open source kanban built with Meteor. Prior to 9.90, isFileValid() in models/fileValidation.js used the Unix file command for content-based MIME detection, but detectMimeFromFile() silently returned undefined when that binary was unavailable and the validation fell back to the attacker-controlled fileObj.type supplied through server/routes/attachmentApi.js. On deployments with WITH_API=true and no file binary, an authenticated board member could label HTML containing JavaScript as image/png, bypass the dangerous MIME check, and store active content under the Wekan origin for execution when another user opened it. Version 9.90 adds looksLikeDangerousMarkup() to inspect file bytes and force dangerous-content scanning when MIME detection is unavailable. This issue is fixed in version 9.90.
Severity
8.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 21:00 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/wekan/wekan/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/wekan/wekan/commit/f6ba472f673… | x_refsource_MISC |
| https://github.com/wekan/wekan/releases/tag/v9.90 | x_refsource_MISC |
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CVE-2026-67243 (GCVE-0-2026-67243)
Vulnerability from cvelistv5 – Published: 2026-08-04 06:38 – Updated: 2026-08-04 13:45
VLAI
EPSS
VEX
Summary
freo2 provided by refirio contains an unrestricted upload of file with dangerous type vulnerability. A user with the highest-level administrative privileges for the product may upload an executable file and execute arbitrary OS commands.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 13:40 UTC
CWE
- CWE-434 - Unrestricted upload of file with dangerous type
Assigner
References
2 references
Impacted products
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CVE-2026-67206 (GCVE-0-2026-67206)
Vulnerability from cvelistv5 – Published: 2026-07-30 19:27 – Updated: 2026-08-14 16:50 X_Open Source Unsupported When Assigned
VLAI
EPSS
VEX
Title
Wolf CMS 0.8.3.1 Authenticated RCE via FileManagerController File Upload
Summary
Wolf CMS through 0.8.3.1 contains a remote code execution vulnerability in FileManagerController that allows authenticated attackers to create arbitrary PHP files by exploiting missing file extension validation in the create_file() and save() functions. Attackers with the file_manager_mkfile capability can write malicious PHP content into the web-accessible FILES_DIR directory and trigger execution by requesting the file over HTTP.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 15:09 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Caycon/cve-advisories/blob/mai… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/wolf-cms-aut… | third-party-advisory |
Impacted products
Date Public
2026-07-29 00:00
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CVE-2026-66665 (GCVE-0-2026-66665)
Vulnerability from cvelistv5 – Published: 2026-08-06 14:27 – Updated: 2026-08-06 16:45
VLAI
EPSS
VEX
Title
WordPress Type Hub plugin <= 2.0.6 - Arbitrary File Upload vulnerability
Summary
Unauthenticated Arbitrary File Upload in Type Hub <= 2.0.6 versions.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 16:44 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Brandexponents | Type Hub |
Affected:
n/a , ≤ 2.0.6
(custom)
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CVE-2026-66627 (GCVE-0-2026-66627)
Vulnerability from cvelistv5 – Published: 2026-08-18 13:59 – Updated: 2026-08-18 21:25
VLAI
EPSS
VEX
Title
WordPress GP Premium plugin <= 2.5.5 - Arbitrary File Upload vulnerability
Summary
Contributor Arbitrary File Upload in GP Premium <= 2.5.5 versions.
Severity
9.9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 15:09 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| EDGE22 Studios Ltd. | GP Premium |
Affected:
n/a , ≤ 2.5.5
(custom)
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Mitigation
Architecture and Design
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
Architecture and Design
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
Architecture and Design
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
Implementation
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
Architecture and Design
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
Implementation
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
Implementation
When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
Mitigation MIT-15
Architecture and Design
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
Implementation
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
Implementation
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
Architecture and Design
Operation
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
Architecture and Design
Operation
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.