FastDup – Fastest WordPress Migration & Duplicator <= 2.7.2 - Unauthenticated Path Traversal
Strategic Overview
- Status
- Patched in 2.7.3
- Affected Plugin
- FastDup – Fastest WordPress Migration & Duplicator
- Affected Version
<= 2.7.2- CVSS
- 5.3Medium
- Weakness type
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CVE
CVE-2026-52703
At a glance
CVE-2026-52703 is a medium-severity Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the FastDup WordPress plugin, affecting versions <= 2.7.2. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.7.3; sites on affected versions should update now. Disclosed June 2026, reported by R2D2.
Vulnerability Overview
The FastDup – Fastest WordPress Migration & Duplicator plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 2.7.2. This makes it possible for unauthenticated attackers to perform actions on files outside of the originally intended directory.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Reaching this weakness in FastDup <= 2.7.2 takes no account at all. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.
Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. For FastDup the fix is 2.7.3: builds <= 2.7.2 are affected, anything from 2.7.3 onward is not.
Remediation
Update to version 2.7.3, or a newer patched version
How does WordSec protect against this?
Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: FastDup 2.7.3 closes this, and updating the plugin is the step that ends it.
- Firewall
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in FastDup – Fastest WordPress Migration & Duplicator
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