CVE-2025-5940

The Osom Blocks – Custom Post Type listing block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘class_name’ parameter in all versions up to, and including, 1.2.1 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.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://plugins.trac.wordpress.org/browser/osomblocks/trunk/blocks/cpt-list/index.php#L171	Product
https://wordpress.org/plugins/osomblocks/#developers	Product
https://www.wordfence.com/threat-intel/vulnerabilities/id/54e022df-0dc7-4f60-811d-48a92b723d55?source=cve	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:osompress:osom_blocks:*:*:*:*:*:wordpress:*:*

History

07 Jul 2025, 15:54

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-27 08:15

Updated : 2025-07-07 15:54

NVD link : CVE-2025-5940

Mitre link : CVE-2025-5940

CVE.ORG link : CVE-2025-5940

JSON object : View

Products Affected

osompress

osom_blocks

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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