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.
2625 vulnerabilities reference this CWE, most recent first.
CVE-2026-111311 (GCVE-0-2026-111311)
Vulnerability from cvelistv5 – Published: 2026-10-16 08:27 – Updated: 2026-10-16 14:14
VLAI
EPSS
VEX
Title
DoubleScale | All-in-One CRM <= 1.5.1 - Authenticated (Subscriber+) Arbitrary File Upload via Portal 'ticketless' Attachment Endpoint
Summary
The DoubleScale | All-in-One CRM – Sales, Multi-Channel Marketing, Newsletter, Booking, Helpdesk, Automation, MCP & More plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.5.1 via the store_upload function. This is due to a fail-open extension allow-list in extension_is_allowed() that returns true when wp_check_filetype() yields an empty type for unrecognized extensions such as .php, combined with magic-byte-only MIME detection and no capability check beyond is_user_logged_in(). This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. Exploitation requires the Helpdesk module to be enabled, as the vulnerable REST endpoint is only registered when that module is active.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 14:13 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| samuelgallegos | DoubleScale CRM | All-in-One CRM – Sales, Multi-Channel Marketing, Newsletter, Booking, Helpdesk, Automation, MCP & More |
Affected:
0 , ≤ 1.5.1
(semver)
|
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CVE-2026-111255 (GCVE-0-2026-111255)
Vulnerability from cvelistv5 – Published: 2026-10-28 03:42 – Updated: 2026-10-28 16:10
VLAI
EPSS
VEX
Title
affiliate-toolkit <= 3.9.2 - Authenticated (Contributor+) Arbitrary File Upload via 'atkp_product_largeimageurl' Parameter
Summary
The affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.9.2 via the upload_image function. This is due to insufficient file type validation in upload_image due to a weak Content-Type prefix check and extension derivation from the attacker-controlled URL path, with no dangerous-extension stripping. This makes it possible for authenticated attackers, with contributor-level access and above, to upload files that may be executable, which makes remote code execution possible. Exploitation requires the "import product image" option to be enabled in the plugin settings, as this activates the image download pipeline triggered on product post save.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-28 14:58 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence
CNA
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| cservit | affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display |
Affected:
0 , ≤ 3.9.2
(semver)
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CVE-2026-110469 (GCVE-0-2026-110469)
Vulnerability from cvelistv5 – Published: 2026-11-09 12:47 – Updated: 2026-11-09 17:34
VLAI
EPSS
VEX
Title
Remote Code Execution via Unrestricted File Upload in WidzialniCMS
Summary
WidzialniCMS is vulnerable to Unrestricted File Upload in the /panel/upload.php endpoint. Due to a client-controlled permission check parameter and insufficient validation of the uploadPath parameter, an unauthenticated attacker can upload arbitrary files to any locations on the server, leading to Remote Code Execution.
This issue has been fixed in version 2.5.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 16:50 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
CERT-PL
CNA
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/11/CVE-2026-110468 | third-party-advisory |
| https://widzialni.org/funkcjonalnosci-widzialni-c… | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Fundacja Widzialni | WidzialniCMS |
Affected:
0 , < 2.5
(custom)
cpe:2.3:a:fundacja_widzialni:widzialnicms:*:*:*:*:*:*:*:* |
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CVE-2026-110468 (GCVE-0-2026-110468)
Vulnerability from cvelistv5 – Published: 2026-11-09 12:46 – Updated: 2026-11-09 17:34
VLAI
EPSS
VEX
Title
Remote Code Execution via Unrestricted File Upload in WidzialniCMS
Summary
WidzialniCMS is vulnerable to Unrestricted File Upload in the /panel/controllers/save_photo.php endpoint. Due to a client-controlled permission check parameter and insufficient validation of the currentpath parameter, an unauthenticated attacker can upload arbitrary files to any locations on the server, leading to Remote Code Execution.
This issue has been fixed in version 2.5.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 16:51 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
CERT-PL
CNA
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/posts/2026/11/CVE-2026-110468 | third-party-advisory |
| https://widzialni.org/funkcjonalnosci-widzialni-c… | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Fundacja Widzialni | WidzialniCMS |
Affected:
0 , < 2.5
(custom)
cpe:2.3:a:fundacja_widzialni:widzialnicms:*:*:*:*:*:*:*:* |
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CVE-2026-110025 (GCVE-0-2026-110025)
Vulnerability from cvelistv5 – Published: 2026-10-13 15:41 – Updated: 2026-10-15 15:11 X_Open Source
VLAI
EPSS
VEX
Title
slackero phpwcms Extension Check cnt23.article.inc.php unrestricted upload
Summary
A flaw has been found in slackero phpwcms up to 1.9.49/1.12.3. This issue affects some unknown processing of the file include/inc_front/content/cnt23.article.inc.php of the component Extension Check. This manipulation of the argument POST_name causes unrestricted upload. The attack can be initiated remotely. Upgrading to version 1.9.50 and 1.12.4 is capable of addressing this issue. Patch name: 118c978430f5a9668b30535f6e592c7ae8df711f/f4c136b467565b2d16ebe2b8276b9a03547a9a69/8571cb47df8d66804d1eb88ae3d1ab4fb513e1e7. Upgrading the affected component is recommended.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 14:52 UTC
Assigner
VulDB
CNA
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/417752 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/417752/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-110025 | third-party-advisory |
| https://vuldb.com/submit/992814 | third-party-advisory |
| https://github.com/slackero/phpwcms/security/advi… | related |
| https://github.com/slackero/phpwcms/commit/f4c136… | patch |
| https://github.com/slackero/phpwcms/releases/tag/… | patch |
| https://github.com/slackero/phpwcms/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| slackero | phpwcms |
Affected:
1.9.0
Affected: 1.9.1 Affected: 1.9.2 Affected: 1.9.3 Affected: 1.9.4 Affected: 1.9.5 Affected: 1.9.6 Affected: 1.9.7 Affected: 1.9.8 Affected: 1.9.9 Affected: 1.9.10 Affected: 1.9.11 Affected: 1.9.12 Affected: 1.9.13 Affected: 1.9.14 Affected: 1.9.15 Affected: 1.9.16 Affected: 1.9.17 Affected: 1.9.18 Affected: 1.9.19 Affected: 1.9.20 Affected: 1.9.21 Affected: 1.9.22 Affected: 1.9.23 Affected: 1.9.24 Affected: 1.9.25 Affected: 1.9.26 Affected: 1.9.27 Affected: 1.9.28 Affected: 1.9.29 Affected: 1.9.30 Affected: 1.9.31 Affected: 1.9.32 Affected: 1.9.33 Affected: 1.9.34 Affected: 1.9.35 Affected: 1.9.36 Affected: 1.9.37 Affected: 1.9.38 Affected: 1.9.39 Affected: 1.9.40 Affected: 1.9.41 Affected: 1.9.42 Affected: 1.9.43 Affected: 1.9.44 Affected: 1.9.45 Affected: 1.9.46 Affected: 1.9.47 Affected: 1.9.48 Affected: 1.9.49 Affected: 1.12.0 Affected: 1.12.1 Affected: 1.12.2 Affected: 1.12.3 Unaffected: 1.9.50 Unaffected: 1.12.4 cpe:2.3:a:phpwcms:phpwcms:*:*:*:*:*:*:*:* |
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CVE-2026-110002 (GCVE-0-2026-110002)
Vulnerability from cvelistv5 – Published: 2026-10-14 02:27 – Updated: 2026-10-15 16:43
VLAI
EPSS
VEX
Title
Snazzy Social Media Feed <= 2.5 - Unauthenticated Arbitrary File Upload via 'pluginURL' Parameter
Summary
The Snazzy Social Media Feed plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.5 via the (file scope) function. This is due to missing WordPress bootstrap, authentication, capability, and nonce checks in the standalone save-to-cache.php script, combined with insufficient sanitization of the pluginURL parameter before it is written to a web-executable PHP file. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. The save-to-cache.php script is directly reachable without loading WordPress; FILTER_SANITIZE_URL — the only filter applied to the pluginURL value — preserves the characters required to craft a valid PHP payload, which is then written verbatim into cached-content/cached-feed.php and immediately executable via a single GET request.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 10:52 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| snazzyplugins | Snazzy Social Media Feed |
Affected:
0 , ≤ 2.5
(semver)
|
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CVE-2026-109397 (GCVE-0-2026-109397)
Vulnerability from cvelistv5 – Published: 2026-10-12 15:16 – Updated: 2026-10-13 16:57
VLAI
EPSS
VEX
Title
Thelia before 3.1.2 and 3.2.x before 3.2.1 File Upload RCE via Filename Trailing Space
Summary
Thelia before 3.1.2 and 3.2.x before 3.2.1 contains an unrestricted file upload vulnerability that allows authenticated back-office users to upload PHP files by appending a trailing space to filenames. FileProcessorService validates the raw filename but FileManager::sanitizeFileName() strips the space, storing an executable .php file under public/cache/documents/ for code execution as the web server user.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 16:40 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
VulnCheck
CNA
References
7 references
| URL | Tags |
|---|---|
| https://github.com/thelia/thelia/security/advisor… | vendor-advisory |
| https://github.com/thelia/thelia/commit/6b706f5cb… | patch |
| https://github.com/thelia/thelia/commit/b71258902… | patch |
| https://github.com/thelia/thelia/blob/3.2.0/core/… | technical-description |
| https://github.com/thelia/thelia/releases/tag/3.1.2 | release-notes |
| https://github.com/thelia/thelia/releases/tag/3.2.1 | release-notes |
| https://www.vulncheck.com/advisories/thelia-befor… | third-party-advisory |
Impacted products
Date Public
2026-10-06 10:16
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CVE-2026-109384 (GCVE-0-2026-109384)
Vulnerability from cvelistv5 – Published: 2026-10-28 06:45 – Updated: 2026-10-29 01:41
VLAI
EPSS
VEX
Title
The Innovative Form Builder <= 1.5.1 - Authenticated (Custom+) Arbitrary File Upload via 'allowedFileExtensions' Configuration + Public /form/submission/ Multipart Upload
Summary
The The Innovative Form Builder – IvyForms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.5.1 via the filterFiletypeAndExt function. This is due to insufficient file type validation due to the absence of a dangerous-extension denylist in the allowed-extensions sanitizer and deliberate override of WordPress's native MIME and extension defences via a registered wp_check_filetype_and_ext filter. This makes it possible for authenticated attackers, with custom-level access and above, to upload files that may be executable, which makes remote code execution possible. An authenticated attacker with the custom add_edit_forms capability must first configure a File Upload field with a dangerous extension (e.g., php) in the allowed-extensions list; once that form is published, any unauthenticated visitor can trigger the actual file upload via the publicly accessible /wp-json/ivyforms/v1/form/submission/ REST route.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 01:30 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence
CNA
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| melograno | The Innovative Form Builder – IvyForms |
Affected:
0 , ≤ 1.5.1
(semver)
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CVE-2026-109219 (GCVE-0-2026-109219)
Vulnerability from cvelistv5 – Published: 2026-10-16 04:26 – Updated: 2026-10-23 18:28
VLAI
EPSS
VEX
Title
Mang Board - 2.4.4 - Unauthenticated Arbitrary File Upload via 'image_path' Parameter
Summary
The Mang Board plugin for WordPress is vulnerable to Arbitrary File Upload in version 2.4.4 via the mbw_file_upload function. This is due to missing file extension validation on the attacker-supplied image_path parameter, whose basename-derived file name bypasses the extension allowlist applied only to the separate file_name parameter. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. Exploitation requires the board to be configured to allow guest posts, which is the plugin's default mode; the required nonce is printed on every public board page, making it readable by any unauthenticated visitor without a WordPress login.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 14:51 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence
CNA
References
8 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| kitae-park | Mang Board |
Affected:
2.4.4
|
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CVE-2026-109218 (GCVE-0-2026-109218)
Vulnerability from cvelistv5 – Published: 2026-10-28 06:45 – Updated: 2026-10-29 01:41
VLAI
EPSS
VEX
Title
Contact Manager <= 9.1.2 - Unauthenticated Arbitrary File Upload via Trailing-Dot Filename Blacklist Bypass
Summary
The Contact Manager plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 9.1.2 via the add_message function. This is due to an incomplete extension blacklist that fails to detect dangerous extensions when a trailing dot causes the extension-derivation routine to return an empty string, which sanitize_file_name() then silently removes before the file is written to disk. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. Successful code execution additionally requires the server to use Apache with libapache2-mod-php (which maps .phar to PHP by default) and the attacker to retrieve the uploaded file within the brief window before it is removed by unlink() at end of request.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 01:29 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence
CNA
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| kleor | Contact Manager |
Affected:
0 , ≤ 9.1.2
(semver)
|
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"time": "2026-10-12T13:58:49.000Z",
"value": "Vendor Notified"
},
{
"lang": "en",
"time": "2026-10-27T18:42:18.000Z",
"value": "Disclosed"
}
],
"title": "Contact Manager \u003c= 9.1.2 - Unauthenticated Arbitrary File Upload via Trailing-Dot Filename Blacklist Bypass"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2026-109218",
"datePublished": "2026-10-28T06:45:19.576Z",
"dateReserved": "2026-10-12T13:43:55.568Z",
"dateUpdated": "2026-10-29T01:41:51.263Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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.