The FastDup – Fastest WordPress Migration & Duplicator plugin for WordPress is vulnerable to unauthorized backup creation and download due to a missing capability check on REST API endpoints in all versions up to, and including, 2.7.1. This makes it possible for authenticated attackers, with Contributor-level access and above, to create and download full-site backup archives containing the entire WordPress installation, including database exports and configuration files.
CVE-2026-1104 is a high severity with CVSS 8.8 Vulnerability issue affecting the Plugin FastDup – Fastest WordPress Migration & Duplicator. It affects Versions up to 2.7.1 and is fixed in 2.7.2.
Use the related hub and response guides to connect this CVE-2026-1104 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2026-1104 is tracked for the Plugin FastDup – Fastest WordPress Migration & Duplicator as high severity with CVSS 8.8. The affected range is Versions up to 2.7.1. Update FastDup – Fastest WordPress Migration & Duplicator to 2.7.2 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 2.7.1.
Confirm FastDup – Fastest WordPress Migration & Duplicator is updated to 2.7.2 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
fastdup
View on wordpress.org
|
| CVE | CVE-2026-1104 |
| Patched Versions |
2.7.2
|
| Affected Versions |
Versions up to 2.7.1
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
FastDup <= 2.1.9 - Sensitive Information Exposure via Directory Listing
FastDup <= 2.7 - Authenticated (Contributor+) Path Traversal via 'dir_path' REST Parameter
FastDup – Fastest WordPress Migration & Duplicator <= 2.7.2 - Unauthenticated Path Traversal
FastDup <= 2.1.7 - Sensitive Information Exposure via Log File
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