CVE-2025-64203

WordPress Mailster plugin < 4.1.14 - Cross Site Scripting (XSS) vulnerability

Published Dec 18, 2025 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in EverPress Mailster mailster allows Reflected XSS.This issue affects Mailster: from n/a through < 4.1.14.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mailster
Mailster mailster
Wordpress
Wordpress wordpress
Vendors & Products Mailster
Mailster mailster
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in EverPress Mailster mailster allows Reflected XSS.This issue affects Mailster: from n/a through < 4.1.14.
Title WordPress Mailster plugin < 4.1.14 - Cross Site Scripting (XSS) vulnerability
Weaknesses CWE-79
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Apr 28, 2026, 6:24 PM
Reserved
Oct 29, 2025, 3:07 AM
Status
Deferred
Published
Dec 18, 2025, 8:16 AM
Modified
Jun 17, 2026, 9:54 AM