Advanced Post Block – Display Posts, Pages, or Custom Posts on Your Page <= 1.13.4 - Missing Authorization to Information Disclosure
Strategic Overview
- Status
- Patched in 1.13.5
- Affected Version
<= 1.13.4- CVSS
- 5.3Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2024-0908
At a glance
CVE-2024-0908 is a medium-severity Missing Authorization vulnerability in the Advanced Post Block WordPress plugin, affecting versions <= 1.13.4. 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 1.13.5; sites on affected versions should update now. Disclosed April 2024, reported by Krzysztof Zając.
Vulnerability Overview
The Advanced Post Block – Display Posts, Pages, or Custom Posts on Your Page plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the apbPosts() function hooked via an AJAX action in all versions up to, and including, 1.13.4. This makes it possible for unauthenticated attackers to retrieve all post data, including those that may be password protected.
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-862: Missing Authorization
Advanced Post Block <= 1.13.4 carries this weakness at apbPosts(), and reaching it 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 Advanced Post Block the fix is 1.13.5: builds <= 1.13.4 are affected, anything from 1.13.5 onward is not.
Remediation
Update to version 1.13.5, 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: Advanced Post Block 1.13.5 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
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