CVE-2026-2433— RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging <= 5.0.11 - Unauthenticated DOM-Based Reflected Cross-Site Scripting via postMessage
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I. Basic Information for CVE-2026-2433
Vulnerability Information
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Vulnerability Title
RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging <= 5.0.11 - Unauthenticated DOM-Based Reflected Cross-Site Scripting via postMessage
Source: NVD (National Vulnerability Database)
Vulnerability Description
The RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via postMessage in all versions up to, and including, 5.0.11. This is due to the plugin's admin-shell.js registering a global message event listener without origin validation (missing event.origin check) and directly passing user-controlled URLs to window.open() without URL scheme validation. This makes it possible for unauthenticated attackers to execute arbitrary JavaScript in the context of an authenticated administrator's session by tricking them into visiting a malicious website that sends crafted postMessage payloads to the plugin's admin page.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging 跨站脚本漏洞
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 RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging 5.0.11及之前版本存在跨站脚本漏洞，该漏洞源于缺少来源验证和URL方
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 |
|---|---|---|---|---|
| rebelcode | RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging | * ~ 5.0.11 | - |
II. Public POCs for CVE-2026-2433
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
- CVE-2026-1216
RSS Aggregator <= 5.0.10 - Reflected Cross-Site Scripting vi - CVE-2025-14745
RSS Aggregator – RSS Import, News Feeds, Feed to Post, and A - CVE-2025-14375
RSS Aggregator – RSS Import, News Feeds, Feed to Post, and A - CVE-2024-9583
RSS Aggregator – RSS Import, News Feeds, Feed to Post, and A - CVE-2024-6621
WP RSS Aggregator <= 4.23.11 - Missing Authorization to Auth
Same vendor: rebelcode
- CVE-2026-1216
RSS Aggregator <= 5.0.10 - Reflected Cross-Site Scripting vi - CVE-2025-14745
RSS Aggregator – RSS Import, News Feeds, Feed to Post, and A - CVE-2025-14375
RSS Aggregator – RSS Import, News Feeds, Feed to Post, and A - CVE-2025-26758
WordPress Spotlight Social Feeds plugin <= 1.7.1 - Sensitive - CVE-2024-9583
RSS Aggregator – RSS Import, News Feeds, Feed to Post, and A
Same weakness: CWE-79
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V. Comments for CVE-2026-2433
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