CVE-2026-95816— Smart Forms <= 2.6.104 - Unauthenticated Stored Cross-Site Scripting via 'formString' Parameter
Quick assessment
Affected
edgarrojas Smart Forms – when you need more than just a contact form
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.
Smart Forms——一款专为满足 WordPress 中超越基础联系表单功能需求而设计的插件——在 2.6.104 及更早版本中存在存储型跨站脚本漏洞（Stored Cross-Site Scripting, XSS）。该漏洞源于对 参数的输入净化（sanitization）和输出转码（output escaping）不足。 攻击者无需身份认证即可将任意恶意脚本注入页面，当其他用户访问被注入的页面时，这些脚本便会执行。 保护 AJAX 处理程序的 nonce 验证机制仅在启用 （阻止匿名提交）选项时生效。这意
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| edgarrojas | Smart Forms – when you need more than just a contact form | ≤ 2.6.104 |
affected |
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I. Basic Information for CVE-2026-95816
Vulnerability Information
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Vulnerability Title
Smart Forms <= 2.6.104 - Unauthenticated Stored Cross-Site Scripting via 'formString' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Smart Forms – when you need more than just a contact form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'formString' parameter in all versions up to, and including, 2.6.104 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nonce check protecting the rednao_smart_forms_save_form_values AJAX handler is only enforced when the smart_forms_block_anonymous_submissions option is enabled, meaning default installations require no authentication or nonce verification whatsoever to submit and store malicious payloads.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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 |
|---|---|---|---|---|
| edgarrojas | Smart Forms – when you need more than just a contact form | 0 ~ 2.6.104 | - |
|
II. Public POCs for CVE-2026-95816
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-95816 (5)
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V. Comments for CVE-2026-95816
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