CVE-2026-116063
Received Received - Intake

Code Injection in DedeCMS via update_guide.php

Publication date: 2026-10-25

Last updated on: 2026-10-25

Assigner: VulDB

Description
A weakness has been identified in DedeCMS up to 5.7.118. Impacted is the function require_once of the file dede/update_guide.php. This manipulation of the argument vtime causes code injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.

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Meta Information

Published
2026-10-25
Last Modified
2026-10-25
Generated
2026-10-25
AI Q&A
2026-10-25
EPSS Evaluated
N/A
NVD
CVE-2026-116063
EUVD
EUVD-2026-109566

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
n/a DedeCMS 5.7.118

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

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Executive Summary

This vulnerability is a code injection flaw in DedeCMS versions up to 5.7.118. It exists in the require_once function of the file dede/update_guide.php where the vtime argument can be manipulated to inject malicious code. This allows remote attackers to execute arbitrary commands on the server.

Detection Guidance

Check if your DedeCMS version is 5.7.118 or earlier by examining the file dede/update_guide.php. Look for unusual network traffic or requests to this file with suspicious parameters like vtime. Use vulnerability scanners that include CVE-2026-116063 in their databases.

Impact Analysis

If exploited, this vulnerability could allow attackers to take control of your DedeCMS website, steal sensitive data, deface the site, or use it as a launch point for further attacks. The public availability of exploit code increases the risk of real-world attacks.

Compliance Impact

This vulnerability could lead to data breaches, which may violate GDPR if personal data is exposed or HIPAA if protected health information is compromised. Organizations could face fines, legal action, and reputational damage for failing to protect sensitive data.

Mitigation Strategies

Immediately update DedeCMS to a version beyond 5.7.118 if available. If no patch exists, restrict access to the dede/update_guide.php file via server configuration. Monitor logs for exploitation attempts and block known malicious IPs.

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