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CVE-2026-11592— Email Subscribers & Newsletters <= 5.9.27 - Missing Authorization to Authenticated (Contributor+) Settings Modification via ig_es_handle_request AJAX Action

Quick assessment

Affected
icegram Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress
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.

icegram email subscribers & newsletters是icegram个人开发者开源的一款邮件订阅管理工具。 WordPress Email Subscribers & Newsletters 5.9.27及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户是否有权执行操作，可能导致已通过身份验证的攻击者（具有贡献者及以上权限）覆盖插件邮件设置、创建受众列表、插入联系人、创建和覆盖新闻通讯广播及帖子通知、添加工作流，并向任意收件人发送批量邮件。

CVSS 4.3 · Medium EPSS 0.47% · P39

Affected Version Matrix 1

VendorProduct Version RangeStatus
icegram Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress ≤ 5.9.27 affected
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I. Basic Information for CVE-2026-11592

Vulnerability Information
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Vulnerability Title
Email Subscribers & Newsletters <= 5.9.27 - Missing Authorization to Authenticated (Contributor+) Settings Modification via ig_es_handle_request AJAX Action
Source: CVE Program / CVE List V5
Vulnerability Description
The Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.9.27. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to overwrite plugin mail settings (from name and from email address), create audience lists, insert arbitrary contacts into those lists, create and overwrite newsletter broadcasts and post notifications, add workflows, and queue and dispatch mass email to arbitrary recipients.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Email Subscribers & Newsletters 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
icegram email subscribers & newsletters是icegram个人开发者开源的一款邮件订阅管理工具。 WordPress Email Subscribers & Newsletters 5.9.27及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户是否有权执行操作，可能导致已通过身份验证的攻击者（具有贡献者及以上权限）覆盖插件邮件设置、创建受众列表、插入联系人、创建和覆盖新闻通讯广播及帖子通知、添加工作流，并向任意收件人发送批量邮件。
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
icegram Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress 0 ~ 5.9.27 -

II. Public POCs for CVE-2026-11592

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III. Intelligence Information for CVE-2026-11592

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Patches & Fixes for CVE-2026-11592 (1)

News Coverage for CVE-2026-11592 (1)

IV. Related Vulnerabilities

Same product: Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress
Same vendor: icegram
Same weakness: CWE-862

V. Comments for CVE-2026-11592

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