Free tool
Is my WordPress plugin safe?
Type a plugin or theme and the version you run, and we’ll show every known vulnerability that affects it, from the 390,007 records in our vulnerability database. The version is listed under Plugins in your WordPress dashboard.
Not this one?MailsterWP Mailster
Plugin · mailster
Mailster
5 known vulnerabilities on record. Add your version above to see which ones affect you.
Jul 23, 2026Editor Arbitrary File Upload in Mailster <= 4.1.17 versions.CVE-2026-27064 · affects up to 4.1.17 · reported by PatchstackCritical 9.1
Editor Arbitrary File Upload in Mailster <= 4.1.17 versions.
Dec 18, 2025Mailster: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2025-64203 · reported by PatchstackHigh 7.1
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.
Jul 22, 2024Mailster: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2024-37433 · affects up to 4.0.9 · reported by PatchstackHigh 7.1
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.
May 17, 2024Mailster: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')CVE-2024-32523 · affects up to 4.0.6 · reported by PatchstackHigh 8.1
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.
Mar 29, 2024Mailster: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2024-30503 · affects up to 4.0.6 · reported by PatchstackHigh 7.1
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.
Versions are matched against the affected ranges published with each record. A plugin can ship a fix under its own numbering, so if something looks off, check the linked record. Want the whole site checked at once? Run the free website check.
Tell us what you're building.
A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.
Not ready to talk yet? Run the free website check and see what Google sees.