CVE-2026-111832— WordPress WP Mailster plugin <= 1.9.1.0 - Arbitrary File Upload vulnerability
Quick assessment
Affected
WP Mailster WP Mailster
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
WP Mailster 插件存在“可上传危险类型文件”的漏洞。攻击者可利用该漏洞向 Web 服务器上传 Web Shell。受影响版本为 WP Mailster：从未知版本至 1.9.1.0（含）。
Possible ATT&CK Techniques 1 AI
T1105 · Ingress Tool Transfer
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I. Basic Information for CVE-2026-111832
Vulnerability Information
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Vulnerability Title
WordPress WP Mailster plugin <= 1.9.1.0 - Arbitrary File Upload vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unrestricted Upload of File with Dangerous Type vulnerability in WP Mailster WP Mailster wp-mailster allows Upload a Web Shell to a Web Server.This issue affects WP Mailster: from n/a through 1.9.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| WP Mailster | WP Mailster | 0 ~ 1.9.1.0 | - |
|
II. Public POCs for CVE-2026-111832
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-111832 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-111832
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