CVE-2026-14556— HappyForms < 1.26.15 - Unauthenticated HTML Injection in Admin Notification Email via client_referer
Quick assessment
Affected
Unknown HappyForms
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.
在 1.26.15 版本之前的 HappyForms WordPress 插件中，未对用户可控的推荐值进行清理或转义，便将其嵌入到表单通知邮件中，这使得未经身份验证的攻击者能够向站点管理员接收的邮件中注入任意 HTML 代码。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Unknown | HappyForms | < 1.26.15 |
affected |
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I. Basic Information for CVE-2026-14556
Vulnerability Information
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Vulnerability Title
HappyForms < 1.26.15 - Unauthenticated HTML Injection in Admin Notification Email via client_referer
Source: CVE Program / CVE List V5
Vulnerability Description
The HappyForms WordPress plugin before 1.26.15 does not sanitise or escape a user-controlled referral value before embedding it in the form notification email, allowing unauthenticated attackers to inject arbitrary HTML into the emails site administrators receive.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | HappyForms | 0 ~ 1.26.15 | - |
|
II. Public POCs for CVE-2026-14556
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Unknown · 2026-10-21 · 53 CVEs total
| CVE-2026-85683 | 8.8 HIGH | Jane Menu < 1.5.1 - Unauthenticated Stored XSS via Store Config Proxy URL |
| CVE-2026-107447 | 5.3 MEDIUM | Contest Gallery < 34.0.1 - Unauthenticated Vote Restriction Bypass via Spoofable Client-IP |
| CVE-2026-105256 | 5.3 MEDIUM | LatePoint < 5.7.5 - Unauthenticated Payment Bypass via 'payment_portion' Parameter |
| CVE-2026-104641 | 5.3 MEDIUM | Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Re |
| CVE-2026-103301 | 5.3 MEDIUM | Payment Gateway for Telcell < 2.0.5 - Unauthenticated Payment Confirmation Forgery via Emp |
| CVE-2026-101138 | 5.3 MEDIUM | CMP - Coming Soon & Maintenance 4.1.19 - 4.1.20 - Unauthenticated Maintenance Mode Bypass |
| CVE-2026-104642 | 2.7 LOW | Simple Shopping Cart 5.1.3 - 5.3.2 - Contributor+ Price Manipulation via Price Verificatio |
| CVE-2026-106932 | Moloni < 5.0.14 - Subscriber+ Arbitrary Order Invoice Generation via genInvoice | |
| CVE-2026-110514 | WPZOOM Portfolio < 1.4.34 - Contributor+ Arbitrary Post/Page Type Overwrite via IDOR | |
| CVE-2026-105257 | LatePoint < 5.7.5 - Agent+ Customer PII Disclosure via IDOR | |
| CVE-2026-107127 | Uncanny Toolkit for LearnDash < 3.8.2 - Account Takeover via Password Reset CSRF | |
| CVE-2026-107128 | Uncanny Toolkit for LearnDash < 3.8.2 - Admin+ Cross-Site Account Lockout via Missing Auth | |
| CVE-2026-107788 | SmartyParcel (WC Ukr Shipping) < 1.23.4 - Subscriber+ Arbitrary Shipping Label Deletion | |
| CVE-2026-107790 | WP Job Openings < 4.1.1 - Author+ Stored XSS via Job Title | |
| CVE-2026-107789 | SmartyParcel < 1.23.4 - Unauthenticated Shipping Label Disclosure via IDOR | |
| CVE-2026-108073 | SureCart < 4.9.5 - Unauthenticated Private Catalog Data Disclosure via 'expand' Parameter | |
| CVE-2026-109147 | WP Booking System < 2.1.0.3 - Reflected XSS via 'booking_id' Parameter | |
| CVE-2026-109926 | Productive Commerce < 1.1.49 - Subscriber+ Arbitrary Plugin Activation | |
| CVE-2026-110523 | WP User Manager 2.9.21 - 2.9.25 - Unauthenticated Privilege Escalation via Paid Registrati | |
| CVE-2026-100145 | Synchrony Financing 1.0.5 - 1.1.1 - Unauthenticated Order Takeover via admin_order_callbac |
Showing top 20 of 53 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: HappyForms
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CVE-2024-44063
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Same vendor: Unknown
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CVE-2026-85683
Jane Menu < 1.5.1 - Unauthenticated Stored XSS via Store Con -
CVE-2026-107447
Contest Gallery < 34.0.1 - Unauthenticated Vote Restriction -
CVE-2026-105256
LatePoint < 5.7.5 - Unauthenticated Payment Bypass via 'paym -
CVE-2026-104642
Simple Shopping Cart 5.1.3 - 5.3.2 - Contributor+ Price Mani -
CVE-2026-104641
Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypas
V. Comments for CVE-2026-14556
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