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CVE-2026-18781— Drag and Drop Multiple File Upload for Contact Form 7 < 1.3.9.9 - Unauthenticated RCE via Control Character Filename Bypass

Quick assessment

Affected
Unknown Drag and Drop Multiple File Upload for Contact Form 7
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 插件 Contact Form 7 中“拖放多文件上传”功能在 1.3.9.9 版本之前存在安全漏洞。该插件在上传文件后会从文件名中剥离某些字符，但并未对最终的文件名进行验证。这一缺陷使得未认证的用户能够绕过插件的文件类型限制，从而在服务器上执行任意代码。

AI Predicted 9.8 Difficulty: Easy EPSS 0.32% · P25

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Drag and Drop Multiple File Upload for Contact Form 7 < 1.3.9.9 affected
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I. Basic Information for CVE-2026-18781

Vulnerability Information
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Vulnerability Title
Drag and Drop Multiple File Upload for Contact Form 7 < 1.3.9.9 - Unauthenticated RCE via Control Character Filename Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
The Drag and Drop Multiple File Upload for Contact Form 7 WordPress plugin before 1.3.9.9 does not validate the final name of an uploaded file after stripping characters from it, allowing unauthenticated users to defeat its file type restrictions and execute arbitrary code on the server.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 Drag and Drop Multiple File Upload for Contact Form 7 0 ~ 1.3.9.9 -

II. Public POCs for CVE-2026-18781

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-18781

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Vendor Advisories for CVE-2026-18781 (1)

Same Patch Batch · Unknown · 2026-08-21 · 20 CVEs total

CVE-2026-19848 6.5 MEDIUM ProfilePress < 4.17.1 - Unauthenticated Arbitrary Shortcode Execution via Display Name
CVE-2026-17559 5.3 MEDIUM Content Protector (Passster) < 4.3.9 - Unauthenticated Protected Content Disclosure via RE
CVE-2026-16650 5.3 MEDIUM Charitable < 1.8.12 - Unauthenticated Donation Payment-Status Manipulation via Square Webh
CVE-2026-15150 5.3 MEDIUM myCred < 3.2.5 - Unauthenticated Payment Bypass via Missing PayPal IPN Receiver Verificati
CVE-2026-15046 4.2 MEDIUM LitExtension: Store to WooCommerce Migration <= 1.2.5 - Connector Token Takeover via CSRF
CVE-2026-18356 3.7 LOW Limit Login Attempts Reloaded < 3.3.5 - Username Denylist Bypass via Case Variant and Acco
CVE-2026-13176 2.7 LOW Eventin < 4.1.21 - Contributor+ Server-Side Request Forgery
CVE-2026-13736 NewPath WildApricotPress Add-on – Member Directory <= 1.0.0 - Unauthenticated Member PII D
CVE-2025-15671 Welcart e-Commerce < 2.12.1 - Session Fixation via uscesid Parameter
CVE-2026-14325 Drag and Drop Multiple File Upload for Contact Form 7 < 1.3.9.9 - Admin+ Stored XSS via dr
CVE-2026-14601 Link Whisper < 0.9.7 - Editor+ SQL Injection via domain Parameter
CVE-2026-16576 Dokan < 5.0.14 - Shop Manager+ Arbitrary Plugin Installation/Activation via REST API
CVE-2026-16962 Tamara Checkout <= 1.9.9.20 - Unauthenticated Order Status Manipulation
CVE-2026-16575 Dokan < 5.0.14 - Unauthenticated Commission Settings Disclosure via Store Categories REST
CVE-2026-19085 Copy & Delete Posts < 1.5.6 - Author+ Password-Protected Post Content Disclosure
CVE-2026-19435 Copy & Delete Posts < 1.5.6 - Authenticated Arbitrary Post Content and Password Disclosure
CVE-2026-16959 Media Library Assistant < 3.40 - Author+ SQL Injection via mla_search_connector
CVE-2026-16577 Dokan < 5.0.14 - Vendor+ Reverse Withdrawal Ledger Manipulation via Client-Supplied Amount
CVE-2026-75796 AI Engine 2.8.0 - 3.6.0 - Admin+ Multisite Network Administrator Account Takeover via MCP

IV. Related Vulnerabilities

Same product: Drag and Drop Multiple File Upload for Contact Form 7
Same vendor: Unknown

V. Comments for CVE-2026-18781

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