CVE-2025-54751

PostX <= 4.1.36 - Missing Authorization

2025-09-02 00:00

Strategic Overview

Status: Patched in 4.1.37
Affected Plugin: Post Grid Gutenberg Blocks – PostX
Affected Version: <= 4.1.36
CVSS: 4.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2025-54751

View all Post Grid Gutenberg Blocks – PostX vulnerabilities

At a glance

CVE-2025-54751 is a medium-severity Missing Authorization vulnerability in the Post Grid Gutenberg Blocks WordPress plugin, affecting versions <= 4.1.36. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 4.1.37; sites on affected versions should update now. Disclosed September 2025, reported by Abu Hurayra (HurayraIIT).

Vulnerability Overview

The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 4.1.36. This makes it possible for authenticated attackers, with Subscriber-level access and above, to perform an unauthorized action.

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.

CWE-862: Missing Authorization

Reaching this weakness in Post Grid Gutenberg Blocks <= 4.1.36 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 Post Grid Gutenberg Blocks the fix is 4.1.37: builds <= 4.1.36 are affected, anything from 4.1.37 onward is not.

Remediation

Update to version 4.1.37, 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: Post Grid Gutenberg Blocks 4.1.37 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-54751 https://www.wordfence.com/threat-intel/vulnerabilities/id/6e031c1d-14c9-4e5d-8881-2f02ee321efe https://nvd.nist.gov/vuln/detail/CVE-2025-54751

Related records

Same weakness class

CVSS Vector

4.3

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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