CVE-2021-24918— Smash Balloon Social Post Feed < 4.0.1 - Subscriber+ Arbitrary Plugin Settings Update to Stored XSS
Quick assessment
Affected
Unknown Smash Balloon Social Post Feed
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（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 插件存在跨站脚本漏洞，该漏洞源于 Smash Balloon Social Post Feed 在保存插件设置之前没有任何权限或随机数验证。 因此，易受攻击站点上的任何登录用户都可以更新设置并在其每个帖子和页面上存储流氓 JavaScript。
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I. Basic Information for CVE-2021-24918
Vulnerability Information
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Vulnerability Title
Smash Balloon Social Post Feed < 4.0.1 - Subscriber+ Arbitrary Plugin Settings Update to Stored XSS
Source: CVE Program / CVE List V5
Vulnerability Description
The Smash Balloon Social Post Feed WordPress plugin before 4.0.1 did not have any privilege or nonce validation before saving the plugin's setting. As a result, any logged-in user on a vulnerable site could update the settings and store rogue JavaScript on each of its posts and pages.
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（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 插件存在跨站脚本漏洞，该漏洞源于 Smash Balloon Social Post Feed 在保存插件设置之前没有任何权限或随机数验证。 因此，易受攻击站点上的任何登录用户都可以更新设置并在其每个帖子和页面上存储流氓 JavaScript。
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 |
|---|---|---|---|---|
| Unknown | Smash Balloon Social Post Feed | 4.0.1 ~ 4.0.1 | - |
|
II. Public POCs for CVE-2021-24918
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-24918 (1)
Other References for CVE-2021-24918 (1)
Same Patch Batch · Unknown · 2021-11-29 · 19 CVEs total
| CVE-2021-24822 | Stylish Cost Calculator < 7.04 - Subscriber+ Unauthorised AJAX Calls to Stored XSS | |
| CVE-2017-20008 | myCRED < 1.7.8 - Reflected Cross-Site Scripting | |
| CVE-2021-24745 | About Author Box < 1.0.2 - Contributor+ Stored Cross-Site Scripting | |
| CVE-2021-24748 | Email Before Download < 6.8 - Admin+ SQL Injection | |
| CVE-2021-24749 | URL Shortify < 1.5.1 - Arbitrary Link/Group Deletion via CSRF | |
| CVE-2021-24751 | GenerateBlocks < 1.4.0 - Contributor+ Stored Cross-Site Scripting | |
| CVE-2021-24755 | myCred < 2.3 - Subscriber+ SQL Injection | |
| CVE-2021-24768 | WP RSS Aggregator < 4.19.2 - Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24811 | Shop Page WP < 1.2.8 - Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24927 | My Calendar < 3.2.18 - Subscriber+ Reflected Cross-Site Scripting | |
| CVE-2021-24842 | Bulk Datetime Change < 1.12 - Missing Authorisation | |
| CVE-2021-24860 | BSK PDF Manager < 3.1.2 - Admin+ SQL Injection | |
| CVE-2021-24876 | Registrations for The Events Calendar < 2.7.5 - Reflected Cross-Site Scripting | |
| CVE-2021-24883 | Popup Anything < 2.0.4 - Contributor+ Stored Cross-Site Scripting | |
| CVE-2021-24889 | Ninja Forms < 3.6.4 - Admin+ SQL Injection | |
| CVE-2021-24899 | Media-Tags <= 3.2.0.2 - Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24908 | Check & Log Email < 1.0.4 - Reflected Cross-Site Scripting | |
| CVE-2021-24915 | Contest Gallery < 13.1.0.6 - Missing Access Controls to Unauthenticated SQL injection / Em |
IV. Related Vulnerabilities
Same product: Smash Balloon Social Post Feed
-
CVE-2025-49937
WordPress Smash Balloon Social Post Feed plugin <= 4.3.2 - B -
CVE-2024-31379
WordPress Smash Balloon Social Post Feed plugin <= 4.2.1 - C -
CVE-2022-4477
Smash Balloon Social Post Feed < 4.1.6 - Contributor+ Stored -
CVE-2021-25065
Smash Balloon Social Post Feed < 4.1.1 - Authenticated Refle -
CVE-2021-24508
Smash Balloon Social Post Feed < 2.19.2 - Unauthenticated St
Same vendor: Unknown
-
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CVE-2026-94297
Media Library Organizer 2.0.4 - 2.1.3 - Contributor+ Arbitra -
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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
V. Comments for CVE-2021-24918
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