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Vulnerability record · CVE-2024-4305 · published 17 June 2024

CVE-2024-4305: Wpxpo postx cross-site scripting vulnerability

Wpxpo · Postx

The Post Grid Gutenberg Blocks and WordPress Blog Plugin WordPress plugin before 4.1.0 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

6.8 CVSS 3.1 Medium EPSS 0.43% · top 65.3% CWE-79 · Cross-site scripting
6.8CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The Post Grid Gutenberg Blocks and WordPress Blog Plugin WordPress plugin before 4.1.0 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://wpscan.com/vulnerability/635be98d-4c17-4e75-871f-9794d85a2eb1/ ExploitThird Party Advisory
https://wpscan.com/vulnerability/635be98d-4c17-4e75-871f-9794d85a2eb1/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2024-10728Wpxpo postx missing authorization vulnerabilityThe Post Grid Gutenberg Blocks and WordPress Blog Plugin – PostX plugin for WordPress is vulnerable to unauthorized plugin installation/activation du…EPSS 38%8.8CVE-2024-31246Wpxpo postx missing authorization vulnerabilityMissing Authorization vulnerability in WPXPO PostX ultimate-post allows Exploiting Incorrectly Configured Access Control Security Levels.This issue a…EPSS 0.34%6.1CVE-2023-3992Wpxpo postx vulnerabilityThe PostX WordPress plugin before 3.0.6 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-…EPSS 0.49%6.1CVE-2023-36385Wpxpo postx cross-site scripting vulnerabilityUnauth. Reflected Cross-Site Scripting (XSS) vulnerability in wpxpo PostX – Gutenberg Post Grid Blocks plugin <= 2.9.9 versions.EPSS 0.41%5.4CVE-2024-50443Wpxpo postx cross-site scripting vulnerabilityImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPXPO PostX ultimate-post.This issue affects Po…EPSS 0.26%5.4CVE-2024-3239Wpxpo postx cross-site scripting vulnerabilityThe Post Grid Gutenberg Blocks and WordPress Blog Plugin WordPress plugin before 4.0.2 does not validate and escape some of its block options before …EPSS 0.42%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed6.1CVE-2025-48700Zimbra Classic UI stored XSS via crafted email HTMLZimbra Collaboration Suite Classic UI fails to properly sanitize HTML content in email messages, allowing crafted tag structures and attribute values…KEVEPSS 1.7%analysed

Source: NIST National Vulnerability Database (record CVE-2024-4305), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.