What is the CVE-2026-30643 vulnerability?

CVE-2026-30643 is a security vulnerability discovered in Dedecms's Dedecms. The vulnerability has been assigned a CVSS score of 9.8 (critical severity). Any organization using this product should immediately verify their exposure and take appropriate remediation steps.

Who is affected by CVE-2026-30643?

This vulnerability affects users of Dedecms's Dedecms. Organizations using this solution should check whether their deployed version is vulnerable and apply available security patches or implement recommended workarounds.

How to protect against CVE-2026-30643?

Apply security patches released by Dedecms or implement recommended workarounds. Regular vulnerability monitoring and prompt patch deployment are essential for effective protection against this type of threat.

What is the risk level of CVE-2026-30643?

The vulnerability has a CVSS score of 9.8 (critical severity). Successful exploitation could lead to compromise of organizational systems and data.

CVE-2026-30643: critical Dedecms vulnerability (CVSS 9.8)

Summary

Parameter	Value
CVE ID	CVE-2026-30643
Alert Source	GitHub Advisory - Critical Vulnerability
CVE Publication Year	2026
Date Published	2026-04-01
Vendor	Dedecms
Product	Dedecms
CVSS Score	9.8 (critical)
EPSS Score	No data
CISA KEV	No
Ransomware	Not confirmed

Vulnerability Description

An issue was discovered in DedeCMS 5.7.118 allowing attackers to execute code via crafted setup tag values in a module upload.

Required Actions

Apply vendor patches or mitigations as soon as available.

Who Is Affected?

This vulnerability affects Dedecms by Dedecms. Check if your organization uses this software and requires updates.

Sources

Need help securing your systems? nFlo team offers vulnerability management and 24/7 SOC services. Contact us.

How can nFlo help?

If your organization uses products affected by this vulnerability, contact us. We can help with:

Verifying whether your systems are at risk
Implementing patches and risk mitigation
Monitoring for exploitation attempts in your environment

Useful resources:

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CVE-2026-30643: Code execution via module upload in DedeCMS

Summary

Vulnerability Description

Required Actions

Who Is Affected?

Sources

How can nFlo help?

Learn More

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