Unauthorized Backup Creation in FastDup WordPress Migration Plugin
CVE-2026-1104

8.8HIGH

Key Information:

Vendor

WordPress
Status
Fastdup – Fastest WordPress Migration & Duplicator
Vendor
CVE Published:
12 February 2026

What is CVE-2026-1104?

The FastDup plugin, designed for WordPress migration and duplication, presents a security risk through a flaw in its REST API endpoints. The absence of adequate capability verification allows authenticated users, categorized as Contributor-level or higher, to create and download unrestricted backup archives of the entire WordPress site. This includes sensitive data such as database contents and configuration files, potentially compromising site integrity and user data.

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Affected Version(s)

FastDup – Fastest WordPress Migration & Duplicator * <= 2.7.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/fastdup/trunk/...
https://plugins.trac.wordpress.org/changeset/3449530/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Athiwat Tiprasaharn
Itthidej Aramsri
Waris Damkham
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