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CVE-2026-19859— JetFormBuilder < 3.6.5.2 - Unauthenticated Arbitrary Shortcode Execution via 'status' Parameter

Quick assessment

Affected
Unknown JetFormBuilder
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.

JetFormBuilder WordPress 插件在 3.6.5.2 版本之前，未在将某个请求参数作为消息内容渲染前对其进行清理（sanitize），这使得未认证用户能够在任何显示表单的页面上执行站点上已注册的任意短代码（shortcodes）。由于转义（escaping）是在后续的短代码展开（shortcode-expansion）步骤之前而非之后应用，因此该转义可以被绕过。

CVSS 6.5 · Medium EPSS 0.20% · P10

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown JetFormBuilder < 3.6.5.2 affected
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I. Basic Information for CVE-2026-19859

Vulnerability Information
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Vulnerability Title
JetFormBuilder < 3.6.5.2 - Unauthenticated Arbitrary Shortcode Execution via 'status' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The JetFormBuilder WordPress plugin before 3.6.5.2 does not sanitize a request parameter before rendering it as message content, allowing unauthenticated users to execute arbitrary shortcodes registered on the site on any page displaying a form. Escaping is applied to that content before a later shortcode-expansion pass rather than after it, so the escaping can be bypassed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/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 JetFormBuilder 0 ~ 3.6.5.2 -

II. Public POCs for CVE-2026-19859

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III. Intelligence Information for CVE-2026-19859

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Vendor Advisories for CVE-2026-19859 (1)

Same Patch Batch · Unknown · 2026-09-06 · 10 CVEs total

CVE-2026-80437 4.8 MEDIUM Ninja Forms 3.14.10 - 3.15.1 - Unauthenticated Arbitrary Shortcode Execution via IP and Re
CVE-2026-80439 4.8 MEDIUM Redirection for Contact Form 7 2.2.7 - 3.2.10 - Unauthenticated Arbitrary Shortcode Execut
CVE-2026-19862 4.8 MEDIUM JetFormBuilder < 3.6.5.2 - Unauthenticated Email Header Injection via Send Email Action
CVE-2026-85038 B2BKing < 5.2.40 - Unauthenticated B2B Group Assignment and Approval Bypass via Registrati
CVE-2026-84219 Kirki 6.2.1 - 6.2.5 - Unauthenticated Stored XSS via HTML Entity Decoding
CVE-2026-75793 SureCart < 4.7.0 - Unauthenticated Account Creation with Automatic Login
CVE-2026-18480 SureCart < 4.6.3 - Subscriber+ Administrator Account Takeover
CVE-2026-84028 Bold Page Builder < 5.9.9 - Contributor+ Stored XSS via Slider Elements' additional_settin
CVE-2026-13159 Real Estate Papi <= 1.0.5 - Subscriber+ Plugin Installation

IV. Related Vulnerabilities

Same product: JetFormBuilder
Same vendor: Unknown

V. Comments for CVE-2026-19859

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