CVE-2023-36385 HIGH

CVE-2023-36385: WordPress PostX – Gutenberg Blocks for Post Grid Plugin <= 2.9.9 is vulnerable to Cross Site Scripting (XSS)

Vendor Wpxpo
Product PostX – Gutenberg Post Grid Blocks
Weakness CWE-79 · XSS
Published July 25, 2023
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in wpxpo PostX – Gutenberg Post Grid Blocks plugin <= 2.9.9 versions.

Explanation of Vulnerability in Simple Terms

02Summary

PostX – Gutenberg Post Grid Blocks versions up to 2.9.9 contain a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts into post grid block settings that execute when site visitors view the affected page. The vulnerability requires user interaction to set up the malicious block, but impacts all site visitors who view it.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in visitors' browsers when they view pages with the affected block.

Potential impact on your site

04Site Impact

Visitors to pages using PostX blocks may have their sessions hijacked, credentials stolen, or be redirected to malicious sites.

Conditions required to exploit

05Prerequisites

Attacker must have permission to create or edit posts/pages with the PostX block; site visitor must view the affected page.

Key dates

06Disclosure timeline

July 25, 2023 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE

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