CVE-2024-30503: WordPress Mailster plugin <= 4.0.6 - Reflected Cross Site Scripting (XSS) vulnerability

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-03-29 · updated 2026-06-17
Weakness: CWE-79

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in EverPress Mailster mailster.This issue affects Mailster: from n/a through <= 4.0.6.

Affected products

EverPress Mailster: before 4.0.7 — fixed in 4.0.7

How to fix

Upgrade to a fixed version: EverPress Mailster 4.0.7. Check the vendor advisory for mitigations.

References

https://patchstack.com/database/Wordpress/Plugin/mailster/vulnerability/wordpress-mailster-plugin-4-0-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
https://patchstack.com/database/vulnerability/mailster/wordpress-mailster-plugin-4-0-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

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