Vulnerabilities and security researches formailster mailster

Jun 16, 2026

CVE, Research URL: 1706fa51bc91d338c39038c7ab388537d6a12270
Home page URL: Security reports for Mailster WordPress Newsletter Plugin Compatibility Tester
Application: Mailster WordPress Newsletter Plugin Compatibility Tester
Date: Oct 14, 2020
Research Description: Mailster WordPress Newsletter Plugin [mailster] < 2.4.9 Mailster <= 2.4.5.1 - Stored Cross-Site Scripting The Mailster plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the administration interface in versions up to, and including, 2.4.5.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected versions: max 2.4.9.
Status: vulnerable

CVE, Research URL: 35c42744-3eb8-4dff-9b8f-3c61a8f395fd
Home page URL: Security reports for Mailster WordPress Newsletter Plugin Compatibility Tester
Application: Mailster WordPress Newsletter Plugin Compatibility Tester
Date: -
Research Description: Mailster WordPress Newsletter Plugin [mailster] < 2.4.9 Mailster Gravity Forms < 2.4.9 - Unauthenticated Stored Cross-Site Scripting (XSS) Mailster [1] is a newsletter plugin for WordPress. It allows to create, send and track the newsletter campaigns. Compass Security identified a stored Cross-Site Scripting (XSS) vulnerability affecting the administration interface. Successful exploitation requires no authentication and can be performed remotely. [1] https://codecanyon.net/item/mailster-email-newsletter-plugin-for-wordpress/3078294
Affected versions: max 2.4.9.
Status: vulnerable

Jan 10, 2026

CVE, Research URL: CVE-2025-64203
Home page URL: Security reports for Mailster WordPress Newsletter Plugin Compatibility Tester
Application: Mailster WordPress Newsletter Plugin Compatibility Tester
Date: Dec 18, 2025
Research 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.
Affected versions: max 4.1.14.
Status: vulnerable

Jul 02, 2024

CVE, Research URL: CVE-2024-37433
Home page URL: Security reports for Mailster WordPress Newsletter Plugin Compatibility Tester
Application: Mailster WordPress Newsletter Plugin Compatibility Tester
Date: Jul 22, 2024
Research 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 <= 4.0.9.
Affected versions: max 4.0.10.
Status: vulnerable

Jun 06, 2024

CVE, Research URL: 9845eb1f34f6ca81265e33419f6dc11742e19c8c
Home page URL: Security reports for Mailster WordPress Newsletter Plugin Compatibility Tester
Application: Mailster WordPress Newsletter Plugin Compatibility Tester
Date: Oct 14, 2020
Research Description: Mailster WordPress Newsletter Plugin [mailster] < 2.4.9 WordPress Mailster plugin <= 2.4.8 - Stored Cross-Site Scripting (XSS) vulnerability Stored Cross-Site Scripting (XSS) vulnerability found by Thierry Viaccoz in WordPress Mailster plugin (versions <= 2.4.8).
Affected versions: max 2.4.9.
Status: vulnerable

CVE, Research URL: CVE-2024-30503
Home page URL: Security reports for Mailster WordPress Newsletter Plugin Compatibility Tester
Application: Mailster WordPress Newsletter Plugin Compatibility Tester
Date: Mar 29, 2024
Research 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 versions: max 2.0.0.
Status: vulnerable

CVE, Research URL: CVE-2024-32523
Home page URL: Security reports for Mailster WordPress Newsletter Plugin Compatibility Tester
Application: Mailster WordPress Newsletter Plugin Compatibility Tester
Date: May 17, 2024
Research Description: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in EverPress Mailster mailster.This issue affects Mailster: from n/a through <= 4.0.6.
Affected versions: max 4.0.7.
Status: vulnerable