FastDup – Fastest WordPress Migration & Duplicator <= 2.7.1 - Missing Authorization to Authenticated (Contributor+) Backup Creation and Download
Strategic Overview
- Status
- Patched in 2.7.2
- Affected Plugin
- FastDup – Fastest WordPress Migration & Duplicator
- Affected Version
<= 2.7.1- CVSS
- 8.8High
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2026-1104
At a glance
CVE-2026-1104 is a high-severity Missing Authorization vulnerability in the FastDup WordPress plugin, affecting versions <= 2.7.1. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 2.7.2; sites on affected versions should update now. Disclosed February 2026, reported by Athiwat Tiprasaharn (Jitlada).
Vulnerability Overview
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.
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 interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-862: Missing Authorization
Reaching this weakness in FastDup <= 2.7.1 takes an account at Contributor level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For FastDup the fix is 2.7.2: builds <= 2.7.1 are affected, anything from 2.7.2 onward is not.
Remediation
Update to version 2.7.2, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: FastDup 2.7.2 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in FastDup – Fastest WordPress Migration & Duplicator
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