CVE-2021-24153— Yoast SEO < 3.4.1 - Authenticated Stored Cross-Site Scripting (XSS)
Quick assessment
Affected
Unknown Yoast SEO
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是Wordpress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress 插件是WordPress开源的一个应用插件。 Yoast SEO WordPress plugin before 3.4.1 存在跨站脚本漏洞，该漏洞具有内置的黑名单过滤器。
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2021-24153
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Yoast SEO < 3.4.1 - Authenticated Stored Cross-Site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
A Stored Cross-Site Scripting vulnerability was discovered in the Yoast SEO WordPress plugin before 3.4.1, which had built-in blacklist filters which were blacklisting Parenthesis as well as several functions such as alert but bypasses were found.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是Wordpress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress 插件是WordPress开源的一个应用插件。 Yoast SEO WordPress plugin before 3.4.1 存在跨站脚本漏洞，该漏洞具有内置的黑名单过滤器。
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
II. Public POCs for CVE-2021-24153
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-24153
请登录查看更多情报信息。
Patches & Fixes for CVE-2021-24153 (1)
-
https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo x_refsource_MISC
Vendor Advisories for CVE-2021-24153 (1)
-
https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc x_refsource_CONFIRM
Exploits & Public PoCs for CVE-2021-24153 (1)
-
https://packetstormsecurity.com/files/138192/ x_refsource_MISC
Same Patch Batch · Unknown · 2021-04-05 · 45 CVEs total
| CVE-2021-24163 | Ninja Forms < 3.4.34 - Authenticated SendWP Plugin Installation and Client Secret Key Disc | |
| CVE-2021-24166 | Ninja Forms < 3.4.34 - CSRF to OAuth Service Disconnection | |
| CVE-2021-24165 | Ninja Forms < 3.4.34 - Administrator Open Redirect | |
| CVE-2021-24167 | Web-Stat < 1.4.1 - API Key Disclosure | |
| CVE-2021-24154 | Theme Editor < 2.6 - Authenticated Arbitrary File Download | |
| CVE-2021-24155 | Backup Guard < 1.6.0 - Authenticated Arbitrary File Upload | |
| CVE-2021-24156 | Testimonial Rotator <= 3.0.3 - Authenticated Stored Cross-Site Scripting | |
| CVE-2021-24157 | Orbit Fox by ThemeIsle < 2.10.3 - Authenticated Stored Cross Site Scripting | |
| CVE-2021-24158 | Orbit Fox by ThemeIsle < 2.10.3 - Authenticated Privilege Escalation | |
| CVE-2021-24152 | Popup Builder < 3.74 - Authenticated Reflected Cross-Site Scripting (XSS) | |
| CVE-2021-24164 | Ninja Forms < 3.4.34.1 - Authenticated OAuth Connection Key Disclosure | |
| CVE-2021-24159 | Contact Form 7 Style <= 3.1.9 - Cross-Site Request Forgery to Stored Cross-Site Scripting | |
| CVE-2021-24176 | JH 404 Logger <= 1.1 - Unauthenticated Stored Cross-Site Scripting (XSS) | |
| CVE-2021-24175 | The Plus Addons for Elementor Page Builder < 4.1.7 - Authentication Bypass | |
| CVE-2021-24174 | Database Backups <= 1.2.2.6 - CSRF to Backup Download | |
| CVE-2021-24173 | VM Backups <= 1.0 - CSRF to Stored Cross-Site Scripting (XSS) | |
| CVE-2021-24172 | VM Backups <= 1.0 - CSRF to Database Backup Download | |
| CVE-2021-24171 | WooCommerce Upload Files < 59.4 - Unauthenticated Arbitrary File Upload | |
| CVE-2021-24170 | User Profile Picture < 2.5.0 - Sensitive Information Disclosure | |
| CVE-2021-24169 | Advanced Order Export For WooCommerce < 3.1.8 - Reflected Cross-Site Scripting (XSS) |
Showing top 20 of 45 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Unknown
-
CVE-2026-94274
YayReviews 1.0.4 - 1.4.0 - Unauthenticated Sensitive Data Di -
CVE-2026-94297
Media Library Organizer 2.0.4 - 2.1.3 - Contributor+ Arbitra -
CVE-2026-96886
Course Booking System < 7.0.9 - Unauthenticated Attendee PII -
CVE-2026-97316
Broken Link Notifier 1.3.1 - 2.0.0 - Unauthenticated SSRF vi -
CVE-2026-92424
Content Egg < 11.9.0 - Contributor+ Stored XSS via Import Qu
Same weakness: CWE-79
-
CVE-2026-103590
QloApps through 1.7.0 Reflected XSS via Length of Stay Field -
CVE-2026-103589
QloApps through 1.7.0 Reflected XSS via Room Type Editor -
CVE-2026-103588
QloApps through 1.7.0 Reflected XSS via exceptions field -
CVE-2026-103587
QloApps through 1.7.0 Reflected XSS via Book Now Search Para -
CVE-2026-47096
AJA HELO Plus < 2.1.7 Stored XSS via System Name Parameter
V. Comments for CVE-2021-24153
No comments yet