MainWP Post Plus Extension <= 4.0.3 - Missing Authorization to Arbitrary Page/Post Deletion
Strategic Overview
- Status
- Patched in 4.1.1
- Affected Plugin
- MainWP Post Plus Extension
- Affected Version
<= 4.0.3- CVSS
- 7.1High
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2023-23666
At a glance
CVE-2023-23666 is a high-severity Missing Authorization vulnerability in the MainWP Post Plus Extension WordPress plugin, affecting versions <= 4.0.3. It carries a CVSS score of 7.1 (reachable over the network; low attack complexity; high integrity impact). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 4.1.1; sites on affected versions should update now. Disclosed January 2023, reported by Dave Jong.
Vulnerability Overview
The MainWP Post Plus Extension plugin for WordPress is vulnerable to authorization bypass due to a missing capability check in versions up to, and including, 4.0.3. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to delete arbitrary posts and pages.
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 integrity.
CWE-862: Missing Authorization
Reaching this weakness in MainWP Post Plus Extension <= 4.0.3 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 MainWP Post Plus Extension the fix is 4.1.1: builds <= 4.0.3 are affected, anything from 4.1.1 onward is not.
Remediation
Update to version 4.1.1, 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: MainWP Post Plus Extension 4.1.1 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in MainWP Post Plus Extension
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