Stored Cross-Site Scripting Vulnerability in FastSpring Plugin for WordPress
CVE-2025-4595

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Fastspring
Vendor
CVE Published:
31 May 2025

What is CVE-2025-4595?

The FastSpring plugin for WordPress is susceptible to a Stored Cross-Site Scripting vulnerability through its 'fastspring/block-fastspringblocks-complete-product-catalog' block. This issue arises from inadequate input sanitization and output escaping related to the 'color' attribute. As a result, authenticated attackers with contributor-level access or higher can inject malicious web scripts into pages, leading to the execution of these scripts each time a user visits the affected page.

Affected Version(s)

FastSpring * <= 3.0.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://wordpress.org/plugins/fastspring/

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Cheng Liu
.
CVE-2025-4595 : Stored Cross-Site Scripting Vulnerability in FastSpring Plugin for WordPress