Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-84909— Custom Twitter Feeds <= 2.8.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'buttoncolor' Shortcode Attribute

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 插件“Custom Twitter Feeds – A Tweets Widget or X Feed Widget”在所有 ≤ 2.8.0 的版本中，由于输入清洗不足和输出转义不完善，存在通过 'buttoncolor' 短代码属性触发存储型跨站脚本攻击（Stored XSS）的漏洞。 这使得拥有贡献者（contributor）及以上权限的已认证攻击者，能够向页面注入任意 Web 脚本；当用户访问被注入的页面时，这些脚本将自动执行。 该漏洞在常见的安装配置下可被利用：当管理员配置了访问令牌，并

CVSS 6.4 · Medium EPSS 0.24% · P15

Affected Version Matrix 1

VendorProduct Version RangeStatus
smub Custom Twitter Feeds – A Tweets Widget or X Feed Widget ≤ 2.8.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-84909

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 <= 2.8.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'buttoncolor' Shortcode Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The Custom Twitter Feeds – A Tweets Widget or X Feed Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'buttoncolor' Shortcode Attribute in all versions up to, and including, 2.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability is exploitable on common installs where the admin has configured access tokens with zero or multiple legacy feeds, as this causes the ctf_statuses support_legacy_shortcode option to be set to boolean true by default, activating the unfiltered legacy shortcode attribute code path.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
smub Custom Twitter Feeds – A Tweets Widget or X Feed Widget 0 ~ 2.8.0 -

II. Public POCs for CVE-2026-84909

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-84909

请登录查看更多情报信息。

Other References for CVE-2026-84909 (2)

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-2026-84909

No comments yet

Leave a comment