WordPress plugin
WP Mailster security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 18 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical1
- High5
- Medium12
- Low0
All WP Mailster vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤1.9.1.0Update to 1.9.2.0 | CVE-2026-111830 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload ≤1.9.1.0Update to 1.9.2.0 | CVE-2026-111832 | |
| High7.5 | Authenticated (Contributor+) Local File Inclusion ≤1.9.1.0Update to 1.9.2.0 | CVE-2026-111829 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤1.9.0.0Update to 1.9.1.0 | CVE-2026-105061 | |
| Medium4.3 | Missing Authorization ≤1.9.0.0Update to 1.9.1.0 | CVE-2026-105055 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤1.8.20.0Update to 1.8.21.0 | CVE-2025-24688 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure ≤1.8.17.0Update to 1.8.18.0 | CVE-2025-22303 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤1.8.17.0Update to 1.8.18.0 | CVE-2025-24598 | |
| Medium4.3 | Cross-Site Request Forgery ≤1.8.17.0Update to 1.8.18.0 | CVE-2024-54355 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure ≤1.8.16.0Update to 1.8.17.0 | CVE-2025-24567 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤1.8.17.0Update to 1.8.18.0 | CVE-2024-11782 | |
| Medium6.5 | Missing Authorization ≤1.8.16.0Update to 1.8.17.0 | CVE-2024-53803 | |
| High7.5 | Missing Authorization ≤1.8.16.0Update to 1.8.17.0 | CVE-2024-53805 | |
| High8.8 | Authenticated (Contributor+) SQL Injection via orderby ≤1.8.16.0Update to 1.8.17.0 | CVE-2024-53807 | |
| Medium5.3 | Unauthenticated Information Exposure ≤1.8.16.0Update to 1.8.17.0 | CVE-2024-53804 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤1.8.16.0Update to 1.8.17.0 | CVE-2024-53737 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤1.8.15.0Update to 1.8.16.0 | CVE-2025-24559 | |
| Medium6.1 | Cross-Site Scripting <1.5.5Update to 1.5.5 | CVE-2017-17451 |
- High7.2Unauthenticated Stored Cross-Site Scripting
≤1.9.1.0Update to 1.9.2.0
- Critical9.8Unauthenticated Arbitrary File Upload
≤1.9.1.0Update to 1.9.2.0
- High7.5Authenticated (Contributor+) Local File Inclusion
≤1.9.1.0Update to 1.9.2.0
- High7.2Unauthenticated Stored Cross-Site Scripting
≤1.9.0.0Update to 1.9.1.0
- Medium4.3Missing Authorization
≤1.9.0.0Update to 1.9.1.0
- Medium6.1Reflected Cross-Site Scripting
≤1.8.20.0Update to 1.8.21.0
- Medium5.3Unauthenticated Sensitive Information Exposure
≤1.8.17.0Update to 1.8.18.0
- Medium6.1Reflected Cross-Site Scripting
≤1.8.17.0Update to 1.8.18.0
- Medium4.3Cross-Site Request Forgery
≤1.8.17.0Update to 1.8.18.0
- Medium5.3Unauthenticated Sensitive Information Exposure
≤1.8.16.0Update to 1.8.17.0
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤1.8.17.0Update to 1.8.18.0
- Medium6.5Missing Authorization
≤1.8.16.0Update to 1.8.17.0
- High7.5Missing Authorization
≤1.8.16.0Update to 1.8.17.0
- High8.8Authenticated (Contributor+) SQL Injection via orderby
≤1.8.16.0Update to 1.8.17.0
- Medium5.3Unauthenticated Information Exposure
≤1.8.16.0Update to 1.8.17.0
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤1.8.16.0Update to 1.8.17.0
- Medium6.1Reflected Cross-Site Scripting
≤1.8.15.0Update to 1.8.16.0
- Medium6.1Cross-Site Scripting
<1.5.5Update to 1.5.5
WP Mailster: common questions
Does WP Mailster have known vulnerabilities?
Yes. VulnCrest Radar lists 18 known vulnerabilities in WP Mailster: 1 critical, 5 high, 12 medium. None are known to affect version null.
How do I check which version of WP Mailster I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent WP Mailster vulnerability?
CVE-2026-111830, published Oct 20, 2026: WP Mailster <= 1.9.1.0 - Unauthenticated Stored Cross-Site Scripting. Severity: High (CVSS 7.2).
Is any WP Mailster vulnerability listed in CISA KEV?
No. None of the known WP Mailster vulnerabilities is currently listed in the CISA KEV catalog.