Description

The Content Blocks (Custom Post Widget) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘content’ parameter within the plugin's shortcode Content Block in all versions up to, and including, 3.3.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Classification

CVE ID: CVE-2024-6432

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.4

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

Affected Products

Vendor: vanderwijk

Product: Content Blocks (Custom Post Widget)

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 6.92% (scored less or equal to compared to others)

EPSS Date: 2025-03-21 (when was this score calculated)

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/1f784dfa-5c31-4c44-9230-7beac7f56893?source=cve
https://plugins.trac.wordpress.org/browser/custom-post-widget/trunk/shortcode.php#L73
https://wordpress.org/plugins/custom-post-widget/#developers
https://plugins.trac.wordpress.org/changeset/3146407/#file6
https://plugins.trac.wordpress.org/changeset/3147521/

Timeline