CVE-2026-14876— Smart Slider 3 <= 3.5.1.38 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'data-href' Attribute in Custom HTML Block
Quick assessment
Affected
nextendweb 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 的 Smart Slider 3 插件存在存储型跨站脚本（Stored XSS）漏洞，该漏洞存在于所有 3.5.1.38 及更早版本中，原因是输入数据未进行充分净化且输出时未正确转义。这使得拥有贡献者（Contributor）级别或更高权限的已认证攻击者能够向页面中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将会执行。
Possible ATT&CK Techniques 1 AI
T1059.007 · JavaScriptAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| nextendweb | Smart Slider 3 | ≤ 3.5.1.38 |
affected |
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I. Basic Information for CVE-2026-14876
Vulnerability Information
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Vulnerability Title
Smart Slider 3 <= 3.5.1.38 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'data-href' Attribute in Custom HTML Block
Source: CVE Program / CVE List V5
Vulnerability Description
The Smart Slider 3 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'data-href' parameter in all versions up to, and including, 3.5.1.38 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.
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 |
|---|---|---|---|---|
| nextendweb | Smart Slider 3 | 0 ~ 3.5.1.38 | - |
|
II. Public POCs for CVE-2026-14876
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-14876 (1)
Vendor Advisories for CVE-2026-14876 (1)
IV. Related Vulnerabilities
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