CVE-2021-24661

PostX Gutenberg Blocks Saved Templates Addon <= 2.4.9 - Private Content Disclosure

2021-08-26 00:00

Strategic Overview

Status: Patched in 2.4.10
Affected Plugin: Post Grid Gutenberg Blocks – PostX
Affected Version: <= 2.4.9
CVSS: 4.3Medium
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2021-24661

View all Post Grid Gutenberg Blocks – PostX vulnerabilities

At a glance

CVE-2021-24661 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the Post Grid Gutenberg Blocks WordPress plugin, affecting versions <= 2.4.9. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The issue is fixed in version 2.4.10; sites on affected versions should update now. Disclosed August 2021, reported by apple502j.

Vulnerability Overview

The PostX – Gutenberg Blocks for Post Grid WordPress plugin before 2.4.10, with Saved Templates Addon enabled, allows users with Contributor roles or higher to read password-protected or private post contents the user is otherwise unable to read, given the post ID.

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-200: Exposure of Sensitive Information to an Unauthorized Actor

Reaching this weakness in Post Grid Gutenberg Blocks <= 2.4.9 takes a caller who can reach the endpoint. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For Post Grid Gutenberg Blocks the fix is 2.4.10: builds <= 2.4.9 are affected, anything from 2.4.10 onward is not.

Remediation

Update to version 2.4.10, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Post Grid Gutenberg Blocks 2.4.10 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24661 https://www.wordfence.com/threat-intel/vulnerabilities/id/830a8e85-6134-4f85-996f-b0cb7ccb9d5c https://nvd.nist.gov/vuln/detail/CVE-2021-24661

Related records

Same weakness class

5.3CVE-2025-68606: PostX <= 5.0.3 Information ExposureCVE-2025-68606

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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