CVE-2025-12980

Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX <= 5.0.3 - Missing Authorization to Unauthenticated Sensitive Information Exposure

2025-12-20 14:15
Marcin Dudek (dudekmar)

Strategic Overview

Status
Patched in 5.0.4
Affected Plugin
Post Grid Gutenberg Blocks – PostX
Affected Version
<= 5.0.3
CVSS
7.5High
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2025-12980
View all Post Grid Gutenberg Blocks – PostX vulnerabilities

At a glance

CVE-2025-12980 is a high-severity Missing Authorization vulnerability in the Post Grid Gutenberg Blocks WordPress plugin, affecting versions <= 5.0.3. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires no authentication. The issue is fixed in version 5.0.4; sites on affected versions should update now. Disclosed December 2025, reported by Marcin Dudek (dudekmar).

Vulnerability Overview

The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the '/ultp/v2/get_dynamic_content/' REST API endpoint in all versions up to, and including, 5.0.3. This makes it possible for unauthenticated attackers to retrieve sensitive user metadata, including password hashes.

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. A successful exploit has high impact on confidentiality.

CWE-862: Missing Authorization

Reaching this weakness in Post Grid Gutenberg Blocks <= 5.0.3 takes no account at all. 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 Post Grid Gutenberg Blocks the fix is 5.0.4: builds <= 5.0.3 are affected, anything from 5.0.4 onward is not.

Remediation

Update to version 5.0.4, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Post Grid Gutenberg Blocks 5.0.4 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-12980https://www.wordfence.com/threat-intel/vulnerabilities/id/e85ff3b3-de41-4ac4-b825-b3238725ca44https://nvd.nist.gov/vuln/detail/CVE-2025-12980

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C