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CVE-2026-6177— Custom Twitter Feeds <= 2.5.4 - Unauthenticated Stored Cross-Site Scripting via Cached Tweet Text

Quick assessment

Affected
smub Custom Twitter Feeds – A Tweets Widget or X Feed Widget
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.

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 Custom Twitter Feeds 2.5.4及之前版本存在跨站脚本漏洞，该漏洞源于CTF_Display_Elements::get_post_text()函数输出转义不足，导致存储型跨站脚本攻击，未经身份验

CVSS 7.2 · High EPSS 0.51% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
smub Custom Twitter Feeds – A Tweets Widget or X Feed Widget ≤ 2.5.4 affected
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I. Basic Information for CVE-2026-6177

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Custom Twitter Feeds <= 2.5.4 - Unauthenticated Stored Cross-Site Scripting via Cached Tweet Text
Source: CVE Program / CVE List V5
Vulnerability Description
The Custom Twitter Feeds plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 2.5.4. This is due to insufficient output escaping in the CTF_Display_Elements::get_post_text() function when rendering cached tweet text. The plugin's ctf_get_more_posts AJAX action is available to unauthenticated users and directly outputs cached tweet data through nl2br() without HTML escaping. When an attacker can get malicious content into cached tweet data (either by tweeting content that gets cached by the site's feed configuration, or through other vulnerabilities), the malicious HTML/JavaScript is executed when the unauthenticated endpoint is accessed. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the affected endpoint.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Custom Twitter Feeds 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 Custom Twitter Feeds 2.5.4及之前版本存在跨站脚本漏洞，该漏洞源于CTF_Display_Elements::get_post_text()函数输出转义不足，导致存储型跨站脚本攻击，未经身份验
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
smub Custom Twitter Feeds – A Tweets Widget or X Feed Widget 0 ~ 2.5.4 -

II. Public POCs for CVE-2026-6177

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III. Intelligence Information for CVE-2026-6177

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Patches & Fixes for CVE-2026-6177 (5)

Vendor Advisories for CVE-2026-6177 (1)

IV. Related Vulnerabilities

Same product: Custom Twitter Feeds – A Tweets Widget or X Feed Widget
Same vendor: smub
Same weakness: CWE-79

V. Comments for CVE-2026-6177

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