CVE-2021-24382— Smart Slider 3 < 3.5.0.9 - Authenticated Stored Cross-Site Scripting (XSS)
Quick assessment
Affected
Nextend Smart Slider 3
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。 Smart Slider 3 Free and pro WordPress plugins 3.5.0.9之前版本存在跨站脚本漏洞，该漏洞源于输出回页面之前没有清理项目名称，导致了一个存储跨站点脚本问题。
Possible ATT&CK Techniques 2 AI
T1098 · Account Manipulation T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-24382
Vulnerability Information
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Vulnerability Title
Smart Slider 3 < 3.5.0.9 - Authenticated Stored Cross-Site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
The Smart Slider 3 Free and pro WordPress plugins before 3.5.0.9 did not sanitise the Project Name before outputting it back in the page, leading to a Stored Cross-Site Scripting issue. By default, only administrator users could access the affected functionality, limiting the exploitability of the vulnerability. However, some WordPress admins may allow lesser privileged users to access the plugin's functionality, in which case, privilege escalation could be performed.
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
Smart Slider Free and pro WordPress plugins 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。 Smart Slider 3 Free and pro WordPress plugins 3.5.0.9之前版本存在跨站脚本漏洞，该漏洞源于输出回页面之前没有清理项目名称，导致了一个存储跨站点脚本问题。
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 |
|---|---|---|---|---|
| Nextend | Smart Slider 3 | 3.5.0.9 ~ 3.5.0.9 | - |
|
| Nextend | Smart Slider 3 | 3.5.0.9 ~ 3.5.0.9 | - |
|
II. Public POCs for CVE-2021-24382
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-24382 (1)
-
https://wpscan.com/vulnerability/7b32a282-e51f-4ee5-b59f-5ba10e62a54d x_refsource_CONFIRM
Other References for CVE-2021-24382 (1)
-
https://smartslider.helpscoutdocs.com/article/1746-changelog x_refsource_MISC
IV. Related Vulnerabilities
Same product: Smart Slider 3
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CVE-2026-14876
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CVE-2026-9197
Smart Slider 3 <= 3.5.1.36 - Authenticated (Administrator+) -
CVE-2026-4065
Smart Slider 3 <= 3.5.1.33 - Missing Authorization to Authen
Same weakness: CWE-79
-
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OpenAM before 16.1.3 Reflected XSS via OAuth2 Authorization -
CVE-2026-92767
Twenty20 Image Before-After <= 2.0.5 - Authenticated (Contri
V. Comments for CVE-2021-24382
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