Delete Duplicate Posts <= 4.8.9 - Missing Authorization via AJAX Actions
Strategic Overview
- Status
- Patched in 4.9
- Affected Plugin
- Delete Duplicate Posts
- Affected Version
< 4.9- CVSS
- 5.4Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2023-47754
At a glance
CVE-2023-47754 is a medium-severity Missing Authorization vulnerability in the Delete Duplicate Posts WordPress plugin, affecting versions < 4.9. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 4.9; sites on affected versions should update now. Disclosed November 2023, reported by Huynh Tien Si.
Vulnerability Overview
The Delete Duplicate Posts plugin for WordPress is vulnerable to unauthorized deletion of data due to a missing capability check on some of its AJAX actions in all versions up to 4.9 (exclusive). This makes it possible for authenticated attackers, with subscriber access or higher, to delete duplicate posts, access plugin logs, and opt in to Freemius data gathering.
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.
CWE-862: Missing Authorization
Reaching this weakness in Delete Duplicate Posts < 4.9 takes a caller who can reach the endpoint. 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 Delete Duplicate Posts the fix is 4.9: builds < 4.9 are affected, anything from 4.9 onward is not.
Remediation
Update to version 4.9, 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: Delete Duplicate Posts 4.9 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Delete Duplicate Posts
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