Common Weakness Enumeration

CWE-434

Allowed

Unrestricted 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.

6336 vulnerabilities reference this CWE, most recent first.

CVE-2026-95830 (GCVE-0-2026-95830)

Vulnerability from cvelistv5 – Published: 2026-09-22 23:30 – Updated: 2026-09-22 23:30
VLAI
Title
theRealSain Pixtream post_upload.php unrestricted upload
Summary
A security flaw has been discovered in theRealSain Pixtream up to 866afd4f0cea812b918780fb74b67dccf8c4d6a0. This issue affects some unknown processing of the file /post_upload.php. The manipulation of the argument media results in unrestricted upload. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The vendor was contacted early about this disclosure but did not respond in any way.
CWE
References
URL Tags
https://vuldb.com/vuln/408523 vdb-entrytechnical-description
https://vuldb.com/vuln/408523/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-95830 third-party-advisory
https://vuldb.com/submit/897169 third-party-advisory
https://github.com/yingxiujie/cve/issues/11 exploitissue-tracking
Impacted products
Vendor Product Version
theRealSain Pixtream Affected: 866afd4f0cea812b918780fb74b67dccf8c4d6a0
    cpe:2.3:a:therealsain:pixtream:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-95820 (GCVE-0-2026-95820)

Vulnerability from cvelistv5 – Published: 2026-09-22 22:30 – Updated: 2026-09-22 22:30
VLAI
Title
anirbandutta9 College-Notes-Gallery userprofile.php admin1 unrestricted upload
Summary
A vulnerability was found in anirbandutta9 College-Notes-Gallery up to 8c1cf3d98f30982d069c88ca172612c001eb39f6. Affected by this issue is some unknown functionality of the file /dashboard/userprofile.php?section=admin1. Performing a manipulation of the argument image results in unrestricted upload. It is possible to initiate the attack remotely. The exploit has been made public and could be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.
CWE
References
URL Tags
https://vuldb.com/vuln/408520 vdb-entrytechnical-description
https://vuldb.com/vuln/408520/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-95820 third-party-advisory
https://vuldb.com/submit/897168 third-party-advisory
https://github.com/yingxiujie/cve/issues/10 exploitissue-tracking
Impacted products
Vendor Product Version
anirbandutta9 College-Notes-Gallery Affected: 8c1cf3d98f30982d069c88ca172612c001eb39f6
    cpe:2.3:a:anirbandutta9:college-notes-gallery:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-95500 (GCVE-0-2026-95500)

Vulnerability from cvelistv5 – Published: 2026-09-22 14:15 – Updated: 2026-09-22 15:37
VLAI
Title
JosephChuks php-file-manager-with-code-editor Save codeEditor.php file_put_contents unrestricted upload
Summary
A vulnerability has been found in JosephChuks php-file-manager-with-code-editor up to 3.0. Impacted is the function file_put_contents of the file codeEditor.php of the component Save Handler. The manipulation of the argument filename/content leads to unrestricted upload. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 14:49 UTC
CWE
References
URL Tags
https://vuldb.com/vuln/408348 vdb-entrytechnical-description
https://vuldb.com/vuln/408348/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-95500 third-party-advisory
https://vuldb.com/submit/896602 third-party-advisory
Impacted products
Vendor Product Version
JosephChuks php-file-manager-with-code-editor Affected: 3.0
    cpe:2.3:a:josephchuks:php-file-manager-with-code-editor:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-95499 (GCVE-0-2026-95499)

Vulnerability from cvelistv5 – Published: 2026-09-22 13:45 – Updated: 2026-09-22 14:06
VLAI
Title
JosephChuks php-file-manager-with-code-editor filemanager.php move_uploaded_file unrestricted upload
Summary
A flaw has been found in JosephChuks php-file-manager-with-code-editor up to 3.0. This issue affects the function move_uploaded_file of the file filemanager.php. Executing a manipulation of the argument files can lead to unrestricted upload. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 14:06 UTC
CWE
References
URL Tags
https://vuldb.com/vuln/408347 vdb-entrytechnical-description
https://vuldb.com/vuln/408347/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-95499 third-party-advisory
https://vuldb.com/submit/896595 third-party-advisory
Impacted products
Vendor Product Version
JosephChuks php-file-manager-with-code-editor Affected: 3.0
    cpe:2.3:a:josephchuks:php-file-manager-with-code-editor:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-94383 (GCVE-0-2026-94383)

Vulnerability from cvelistv5 – Published: 2026-09-21 12:52 – Updated: 2026-09-21 14:48
VLAI
Title
MISP Blocklist Workflow Module: Arbitrary Script Execution via Unrestricted File Extension
Summary
The MISP blocklist workflow module accepted a user-supplied blocklist filename parameter without validating the file extension. The only sanitization applied was basename() to strip path components and a check for empty or dot values. A site administrator could specify a filename with an arbitrary extension that would be placed in the MISP export directory. If the underlying web server is configured to interpret and execute scripts from that directory, the resulting file could be invoked, leading to arbitrary code execution in the context of the web server process. The vulnerability requires the attacker to hold site-administrator privileges within MISP, as the blocklist workflow module is restricted to that role. No additional user interaction is required beyond triggering the workflow action with a crafted filename parameter. The impact is full compromise of the MISP server's confidentiality, integrity, and availability, as arbitrary script execution grants the attacker the same privileges as the web server user. Version affected: <2.5.47
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 14:37 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
  • CWE-20 - Improper Input Validation
References
Impacted products
Vendor Product Version
MISP MISP Affected: 0 , < 2.5.47 (semver)
Create a notification for this product.
GCVE extensions
AI involvement GCVE-BCP-05-X-01
Whole record AI-generated Review: review GNA-1

Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. Human validation is required before publication.

ai-computer-assisted:llm-generatedai-computer-assisted:classification
Model Source Identifier
qwen3.8:27b ollama qwen3.8:27b
Patch provenance GCVE-BCP-05-X-02
Generator
patch2vuln.py on 2026-09-21 12:44
Model
qwen3.8:27b
Input
https://github.com/MISP/MISP/commit/e5a943178.patch 9b7cc757cbbc…
Confidence
medium
Commit Subject Patch SHA-256
e5a9431784b4 fix: [security] arbitrary script execution via insufficient 9b7cc757cbbc…
Fix summary

The vulnerability is remediated by enforcing a strict whitelist of allowed file extensions (txt, list, blocklist, csv) on the blocklist filename parameter before the file is processed. Any filename with an extension outside this whitelist is rejected with an error, preventing an attacker from placing files with executable or dangerous extensions (e.g., .php, .phtml) into the MISP export directory where they could be interpreted by the web server.

Patch summary

In app/Model/WorkflowModules/action/Module_blocklist_action.php, five lines are inserted after the existing basename() call. The added code defines an $allowedExtensions array containing 'txt', 'list', 'blocklist', and 'csv', extracts the file extension via pathinfo() with PATHINFO_EXTENSION, and performs a strict (===) in_array() check. If the extension is not in the whitelist, the method returns early with a failure message 'Blocklist filename has an invalid extension.' This check is placed before the existing empty/dot filename validation.

CVSS rationale

AV:N: MISP is a network-accessible web application. AC:L: The attack requires only specifying a filename with a dangerous extension in a workflow parameter; no race conditions or complex timing are needed. AT:N: No manipulation of the target system is required beyond the normal API call. PR:H: The commit message explicitly states 'site admin only', requiring high-privilege MISP access. UI:N: No victim interaction is needed; the workflow action is triggered by the admin themselves. VC:H, VI:H, VA:H: Arbitrary script execution on the MISP server compromises all three local security properties. SC:N, SI:N, SA:N: The impact is confined to the MISP server; no evidence of lateral impact on other systems is present in the patch.

Weakness rationale
  • CWE-434 The blocklist filename parameter accepted arbitrary file extensions without restriction. A site admin could supply a filename with a dangerous extension (e.g., .php) that would be placed in a web-accessible export directory, enabling script execution. The fix restricts extensions to a safe whitelist, which is the canonical remediation for CWE-434.
  • CWE-20 The filename parameter was not validated against a set of acceptable values (extensions). Only path stripping and empty-string checks were performed, leaving the extension entirely unvalidated. This is a general improper input validation weakness that enabled the more specific dangerous-file-type issue.
Attack pattern rationale
  • CAPEC-170 CAPEC-170 describes an attacker uploading or placing a file with a dangerous extension into a target directory where it can be executed. In this case, a site admin specifies a blocklist filename with a dangerous extension (e.g., .php) that is placed in the MISP export directory. The mechanism is not a traditional multipart upload but rather a workflow parameter that results in a file being written to a web-accessible location. CAPEC-170 is the closest available pattern; the uncertainty is that the file is not uploaded via a standard upload endpoint but is instead referenced by name in a workflow action, making the mapping approximate.
Assumptions to verify
  • The commit message states 'site admin only', which is taken as evidence that the vulnerable workflow module requires MISP site-administrator privileges. The exact privilege model and whether lower-privilege roles could reach this code path is not confirmed by the patch alone.
  • The assumption that the MISP export directory is web-accessible and that the web server is configured to execute scripts (e.g., PHP) from that directory is inferred from the commit subject 'arbitrary script execution'. The patch does not include web server configuration evidence.
  • The affected version boundary (prior to v2.5.47) is inferred from the tag_version_boundary metadata showing v2.5.47 as the nearest tag with 142 commits after the fix. The exact first affected version is not stated in the patch.
  • CAPEC-170 (File Upload) is the closest available attack pattern, but the actual mechanism is a workflow parameter specifying a filename rather than a traditional file upload. This mapping is approximate.
  • The CVSS PR:H rating assumes that 'site admin' in MISP corresponds to a high-privilege role requiring authentication and elevated permissions, consistent with MISP's role model.
Model comparison

Selected qwen3.8:27b by deterministic-consensus-v1
The selected result is closest to model consensus; this heuristic does not establish factual correctness and human review remains required.

Model Score Agreement Confidence Assumptions
qwen3.8:27b 5 9 medium 5
Show details on NVD website

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CVE-2026-94104 (GCVE-0-2026-94104)

Vulnerability from cvelistv5 – Published: 2026-09-20 11:09 – Updated: 2026-09-20 11:09
VLAI
Title
NivoCart through 2.4.0 Arbitrary File Upload RCE via filemanager
Summary
NivoCart through 2.4.0 contains an arbitrary file upload vulnerability in the File Manager multi() endpoint that fails to validate file extensions for new filenames or when chunks parameter is 2 or higher. Attackers with view-only back-office access can upload PHP files to the web-accessible image/data/ directory and execute them for remote code execution.
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Impacted products
Vendor Product Version
nivocart nivocart Affected: 0 , ≤ 2.4.0 (semver)
Create a notification for this product.
Date Public
2026-09-19 00:00
Credits
Show details on NVD website

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CVE-2026-93031 (GCVE-0-2026-93031)

Vulnerability from cvelistv5 – Published: 2026-09-18 19:36 – Updated: 2026-09-19 14:11
VLAI
Title
WP Cloud Plugins Use-your-Drive, Out-of-the-Box, Share-one-Drive, and Lets-Box <= 3.8.3 - Authenticated (Subscriber+) Arbitrary File Upload via Media Import
Summary
The WP Cloud Plugins Use-your-Drive, Out-of-the-Box, Share-one-Drive, and Lets-Box plugins for WordPress are vulnerable to Arbitrary File Upload in all versions from 2.0 up to, and including, 3.8.3 via the download_file_to_uploads function. This is due to the import action being registered for unauthenticated users via wp_ajax_nopriv_, a missing capability check in can_import(), and the imported file's extension and contents not being validated against get_allowed_mime_types() before it is written to the uploads directory. 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.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-19 13:20 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Show details on NVD website

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CVE-2026-92980 (GCVE-0-2026-92980)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:03 – Updated: 2026-09-18 18:07 X_Open Source
VLAI
Title
HortusFox-Web < 6.1 Remote Code Execution via Import/Export
Summary
HortusFox-Web prior to version 6.1 contains a remote code execution vulnerability that allows authenticated administrators to execute arbitrary OS commands as the web server user by abusing the Import/Export functionality. Attackers can leverage the Import/Export feature, which is intended solely for data portability, to deploy and execute malicious code on the underlying application server host.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 18:07 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Impacted products
Vendor Product Version
danielbrendel hortusfox-web Affected: 0 , < 6.1 (custom)
Create a notification for this product.
Date Public
2026-09-17 00:00
Show details on NVD website

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CVE-2026-92247 (GCVE-0-2026-92247)

Vulnerability from cvelistv5 – Published: 2026-09-16 02:45 – Updated: 2026-09-16 19:17
VLAI
Title
synaptikcms synaptik-cms Admin File Manager file-manager.php rename unrestricted upload
Summary
A security vulnerability has been detected in synaptikcms synaptik-cms up to 1.3.4.4. This affects the function rename of the file admin/file-manager.php of the component Admin File Manager. The manipulation leads to unrestricted upload. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 1.3.5 is able to mitigate this issue. It is suggested to upgrade the affected component.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 19:16 UTC
CWE
References
Impacted products
Vendor Product Version
synaptikcms synaptik-cms Affected: 1.3.4.0
Affected: 1.3.4.1
Affected: 1.3.4.2
Affected: 1.3.4.3
Affected: 1.3.4.4
Unaffected: 1.3.5
    cpe:2.3:a:synaptikcms:synaptik-cms:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-91849 (GCVE-0-2026-91849)

Vulnerability from cvelistv5 – Published: 2026-09-15 15:30 – Updated: 2026-09-17 15:30
VLAI
Title
WuzhiCMS Avatar Upload index.php setAvatar unrestricted upload
Summary
A security flaw has been discovered in WuzhiCMS up to 4.1.0. This affects the function member::setAvatar of the file /index.php?m=member&f=user&v=setAvatar of the component Avatar Upload. The manipulation of the argument File results in unrestricted upload. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 15:18 UTC
CWE
References
URL Tags
https://vuldb.com/vuln/404077 vdb-entrytechnical-description
https://vuldb.com/vuln/404077/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-91849 third-party-advisory
https://vuldb.com/submit/933702 third-party-advisory
https://github.com/wuzhicms/wuzhicms/issues/219 exploitissue-tracking
https://github.com/wuzhicms/wuzhicms/ product
Impacted products
Vendor Product Version
n/a WuzhiCMS Affected: 4.0
Affected: 4.1.0
    cpe:2.3:a:wuzhicms:wuzhicms:*:*:*:*:*:*:*:*
Show details on NVD website

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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.