CVE-2026-78363— MW WP Form < 5.1.5 - Unauthenticated Arbitrary Shortcode Execution via Completion Message Merge Tags
Quick assessment
Affected
Unknown MW WP 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.
MW WP Form WordPress 插件在 5.1.5 版本之前存在漏洞：该插件未阻止用户提交值中的短代码（shortcodes）在被合并到后续处理的“消息”中时被执行，这使得未认证的用户能够运行站点上已注册的任何短代码。 利用该漏洞的前提是：站点必须被配置为在提交后向访客回显所提交的值。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-78363
Vulnerability Information
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Vulnerability Title
MW WP Form < 5.1.5 - Unauthenticated Arbitrary Shortcode Execution via Completion Message Merge Tags
Source: CVE Program / CVE List V5
Vulnerability Description
The MW WP Form WordPress plugin before 5.1.5 does not prevent shortcodes in user-submitted values from being executed when it merges those values into a message that it later processes for shortcodes, allowing unauthenticated users to run any shortcode registered on the site. Exploitation requires the site to have been configured to echo a submitted value back to the visitor after submission.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/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 | MW WP Form | 0 ~ 5.1.5 | - |
|
II. Public POCs for CVE-2026-78363
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-78363 (1)
-
🔗 MW WP Form < 5.1.5 – Unauthenticated Arbitrary Shortcode Execution via Completion Message Merge Tags | CVE 2026-78363 | Plugin Vulnerabilities exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-09-01 · 3 CVEs total
| CVE-2026-74916 | 6.5 MEDIUM | WP Fastest Cache 0.8.7.7 - 1.5.0 - Unauthenticated Cache Poisoning via Unkeyed Tracking Pa |
| CVE-2026-13611 | 5.3 MEDIUM | KiviCare – Clinic & Patient Management System (EHR) < 4.5.5 - Unauthenticated Patient Data |
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V. Comments for CVE-2026-78363
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