PT-2025-52159 · Everpress · Everpress Mailster+1

João Pedro S Alcântara + 1 · Published 2025-12-18 · Updated 2025-12-18 · CVE-2025-64203

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions EverPress Mailster versions prior to 4.1.14

Description The software contains a flaw due to improper handling of user-supplied data when creating web pages, leading to a Reflected Cross-Site Scripting (XSS) condition. This allows an attacker to inject malicious scripts into a web page viewed by other users. The mailster component is affected.

Recommendations Update EverPress Mailster to version 4.1.14 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-64203

Affected Products

Everpress Mailster

Mailster

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2025-64203 · Security Note
• https://twitter.com/CVEnew/status/2001736596790382806 · Twitter Post
• https://vdp.patchstack.com/database/Wordpress/Plugin/mailster/vulnerability/wordpress-mailster-plugin-4-1-14-cross-site-scripting-xss-vulnerability?_s_id=cve · Note
• https://patchstack.com/database/Wordpress/Plugin/mailster/vulnerability/wordpress-mailster-plugin-4-1-14-cross-site-scripting-xss-vulnerability?_s_id=cve · Note