CVE-2026-76800
Received Received - Intake

Unrestricted File Upload in DeDeCMS

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: VulDB

Description
A flaw has been found in DeDeCMS 3. Affected by this vulnerability is an unknown functionality of the file /include/dialog/select_media_post.php. Executing a manipulation of the argument uploadfile can lead to unrestricted upload. The attack can be executed remotely. The exploit has been published and may be used.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-76800
EUVD
EUVD-2026-63194

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
dedecms dedecms 3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-434 The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

This vulnerability is in DeDeCMS 3, specifically in the file /include/dialog/select_media_post.php. It allows an attacker to manipulate the uploadfile argument, leading to unrestricted file uploads. The attack can be performed remotely and an exploit has been published.

Impact Analysis

An attacker could upload malicious files to the server, potentially gaining control over the system. This could lead to data theft, defacement, or further attacks on the server or connected systems.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR and HIPAA requirements for data protection and security. Compliance may be compromised if sensitive data is exposed or altered.

Mitigation Strategies

Immediately update DeDeCMS to the latest patched version. Disable file uploads if not required or restrict uploads to trusted file types. Monitor network traffic for suspicious file upload attempts to /include/dialog/select_media_post.php.

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