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CVE-2026-3018— Newsletters <= 4.13 - Unauthenticated SQL Injection via wpmlsubscriber_id Parameter

Quick assessment

Affected
contrid Newsletters
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Newsletters 4.13及之前版本存在SQL注入漏洞，该漏洞源于对用户提供的参数转义不足和SQL查询准备不足，可能导致未经身份验证的攻击者通过时间型SQL注入提取敏感信息。

CVSS 7.5 · High EPSS 1.54% · P74

Public Exploits 1

Nuclei · 1 CVE-2026-3018.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
contrid Newsletters ≤ 4.13 affected
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I. Basic Information for CVE-2026-3018

Vulnerability Information
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Vulnerability Title
Newsletters <= 4.13 - Unauthenticated SQL Injection via wpmlsubscriber_id Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Newsletters plugin for WordPress is vulnerable to time-based SQL Injection via the ‘wpmlsubscriber_id’ parameter in all versions up to, and including, 4.13 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Newsletters SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Newsletters 4.13及之前版本存在SQL注入漏洞，该漏洞源于对用户提供的参数转义不足和SQL查询准备不足，可能导致未经身份验证的攻击者通过时间型SQL注入提取敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
contrid Newsletters 0 ~ 4.13 -

II. Public POCs for CVE-2026-3018

# POC Description Source Link Shenlong Link
1 Newsletters WordPress plugin <= 4.13 contains a time-based SQL injection caused by insufficient escaping of the 'wpmlsubscriber_id' parameter, letting unauthenticated attackers extract sensitive database information. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-3018.yaml POC Details
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III. Intelligence Information for CVE-2026-3018

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Patches & Fixes for CVE-2026-3018 (1)

News Coverage for CVE-2026-3018 (1)

IV. Related Vulnerabilities

Same product: Newsletters
Same vendor: contrid
Same weakness: CWE-89

V. Comments for CVE-2026-3018

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