# WP Mailster vulnerabilities

Source: https://junglewise.ai/threats/technologies/wp-mailster  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/wp-mailster.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in WP Mailster: 0 in the last 7 days and 5 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-111830, was published on 22 October 2026. 3 vulnerabilities in the last four weeks, up 50% on the four before (2). 1 critical against 0.

## Counts

- Last 7 days: 0
- Last 30 days: 3
- Last 90 days: 5
- All time: 5 (1 critical, 0 exploited in the wild)

## About WP Mailster

WordPress plugin for email marketing, newsletter management, and automation.

## Latest WP Mailster vulnerabilities

- [CVE-2026-111830: WP Mailster stored cross-site scripting](https://junglewise.ai/threats/cve-2026-111830-improper-neutralization-of-input-during-web-page-generation) (high, CVSS 7.1, published 22 Oct 2026)
- [CVE-2026-111832: WP Mailster arbitrary file upload vulnerability](https://junglewise.ai/threats/cve-2026-111832-unrestricted-upload-of-file-with-dangerous-type-vulnerability-in) (critical, CVSS 10, published 21 Oct 2026)
- [CVE-2026-111829: WP Mailster local file inclusion vulnerability](https://junglewise.ai/threats/cve-2026-111829-improper-control-of-filename-for-include-require-statement-in) (medium, CVSS 6.5, published 19 Oct 2026)
- [CVE-2026-105061: WP Mailster cross-site scripting (XSS) vulnerability](https://junglewise.ai/threats/cve-2026-105061-unauthenticated-cross-site-scripting-xss-in-wp-mailster-1-9-0-0) (high, CVSS 7.1, published 6 Oct 2026)
- [CVE-2026-105055: WP Mailster broken access control vulnerability](https://junglewise.ai/threats/cve-2026-105055-missing-authorization-vulnerability-in-wp-mailster-wp-mailster) (medium, CVSS 5.3, published 5 Oct 2026)

## Most severe WP Mailster vulnerabilities

- [CVE-2026-111832: WP Mailster arbitrary file upload vulnerability](https://junglewise.ai/threats/cve-2026-111832-unrestricted-upload-of-file-with-dangerous-type-vulnerability-in) (critical, CVSS 10, published 21 Oct 2026)
- [CVE-2026-111830: WP Mailster stored cross-site scripting](https://junglewise.ai/threats/cve-2026-111830-improper-neutralization-of-input-during-web-page-generation) (high, CVSS 7.1, published 22 Oct 2026)
- [CVE-2026-105061: WP Mailster cross-site scripting (XSS) vulnerability](https://junglewise.ai/threats/cve-2026-105061-unauthenticated-cross-site-scripting-xss-in-wp-mailster-1-9-0-0) (high, CVSS 7.1, published 6 Oct 2026)
- [CVE-2026-111829: WP Mailster local file inclusion vulnerability](https://junglewise.ai/threats/cve-2026-111829-improper-control-of-filename-for-include-require-statement-in) (medium, CVSS 6.5, published 19 Oct 2026)
- [CVE-2026-105055: WP Mailster broken access control vulnerability](https://junglewise.ai/threats/cve-2026-105055-missing-authorization-vulnerability-in-wp-mailster-wp-mailster) (medium, CVSS 5.3, published 5 Oct 2026)

## Vulnerabilities per week

3 vulnerabilities in the last four weeks, up 50% on the four before (2). 1 critical against 0.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 2 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 3 | 1 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "WP Mailster vulnerabilities", https://junglewise.ai/threats/technologies/wp-mailster, 9 November 2026.