Post Grid Gutenberg Blocks and WordPress Blog Plugin – PostX <= 4.1.2 - Missing Authorization to Arbitrary Options Update
The Post Grid Gutenberg Blocks and WordPress Blog Plugin – PostX plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'postx_presets_callback' function in all versions up to, and including, 4.1.2. This makes it possible for authenticated attackers, with Contributor-level access and above, to change arbitrary options on affected sites. This can be used to enable new user registration and set the default role for new users to Administrator.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Post Grid Gutenberg Blocks – PostX | <= 4.1.2 | 4.1.3 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-862- Platform
- WordPress
- Package
Post Grid Gutenberg Blocks – PostX- Disclosed
- 29.05.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 07a3db33-3787-4b63-835d-8e3026206842 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Post Grid Gutenberg Blocks – PostX
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 29
- First → latest
- 08.2021 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 7
- Medium 22
Disclosures per year
- 2021: 4
- 2022: 0
- 2023: 2
- 2024: 10
- 2025: 5
- 2026: 8
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