CVE-2026-94004: DedeCMS code injection in plus/mytag_js.php

CVE-2026-94004 · Severity: high · CVSS 7.3 · Published 2026-09-20

DedeCMS is a content management system used to publish and manage website content. A vulnerability in the plus/mytag_js.php file allows remote attackers to inject and execute arbitrary code through the aid parameter, potentially giving them full control of the website and underlying server.

Technologies: DedeCMS. Vendors: DedeCMS.

Quick answers

Is CVE-2026-94004 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-94004 being exploited in the wild.
How severe is CVE-2026-94004?
High severity, with a CVSS score of 7.3, published 20 September 2026.
Which products and versions are affected?
DedeCMS up to 5.7.118.
Is there a fix for CVE-2026-94004?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-94004 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-94004?
Check whether you run DedeCMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A code injection vulnerability exists in DedeCMS's plus/mytag_js.php file where the aid parameter is not properly sanitized before processing. An unauthenticated attacker can send a crafted request over the network to inject arbitrary code that will be executed server-side, resulting in remote code execution.

Affected products

  • DedeCMS DedeCMS up to 5.7.118

Timeline

  • 2026-09-20: disclosed

References

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