WordPress security changelog
HIGH CVE-2024-8253 Analyzed

Post Grid and Gutenberg Blocks: Privilege escalation or authentication bypass

Post Grid and Gutenberg Blocks is affected by privilege escalation or authentication bypass. Exploitation requires at least subscriber-level access. A successful request can grant permissions or access that the caller should not possess.

CVE / CNA score 8.8 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Post Grid and Gutenberg Blocks
Plugin slug
post-grid
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Sep 11, 2024
Weakness
CWE-266 — Incorrect Privilege Assignment
NVD-CWE-noinfo

This CVE was published Sep 11, 2024 and is one of 28 known issues for this plugin.

Update, patch or deactivate.

Update Post Grid and Gutenberg Blocks to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical description

The Post Grid and Gutenberg Blocks plugin for WordPress is vulnerable to privilege escalation in all versions 2.2.87 to 2.2.90. This is due to the plugin not properly restricting what user meta values can be updated and ensuring a form is active. This makes it possible for authenticated attackers, with subscriber-level access and above, to update their user meta to become an administrator.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary and upstream sources