PT-2025-23373 · WordPress · Fastspring Plugin

Cheng Liu · Published 2025-05-31 · Updated 2025-05-31 · CVE-2025-4595

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions FastSpring plugin for WordPress versions up to, and including, 3.0.1

Description The issue is related to Stored Cross-Site Scripting due to insufficient input sanitization and output escaping on the color attribute in the 'fastspring/block-fastspringblocks-complete-product-catalog' block. This allows authenticated attackers with contributor-level access and above to inject arbitrary web scripts in pages, which will execute when a user accesses an injected page.

Recommendations For versions up to, and including, 3.0.1, update to a version that addresses the insufficient input sanitization and output escaping issue. As a temporary workaround, consider restricting access to the 'fastspring/block-fastspringblocks-complete-product-catalog' block to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-4595

Affected Products

Fastspring Plugin

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-4595 · Security Note
• https://wordpress.org/plugins/fastspring · Note
• https://t.me/cvenotify/124229 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/e96d118a-e38c-4043-9550-5f5ab0d83dc7?source=cve · Note
• https://twitter.com/CVEnew/status/1928707135795507482 · Twitter Post
• https://t.me/cvetracker/25068 · Telegram Post