CVE-2026-123861— WordPress JetFormBuilder – Hierarchical Select plugin <= 1.0.10 - Insecure Direct Object References (IDOR) vulnerability

Quick assessment

Affected

CrocoBlock JetFormBuilder – Hierarchical Select

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.

CrocoBlock 的 JetFormBuilder – Hierarchical Select（jet-form-builder-hierarchical-select）插件存在“通过用户可控密钥绕过授权”的漏洞，该漏洞源于访问控制安全级别配置不当，可被攻击者利用。此问题影响 JetFormBuilder – Hierarchical Select 插件的从 n/a 到 1.0.10 的所有版本。

CVSS 5.3 · Medium Updated Nov 07, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

WordPress JetFormBuilder – Hierarchical Select plugin <= 1.0.10 - Insecure Direct Object References (IDOR) vulnerability

Source: CVE Program / CVE List V5

Vulnerability Description

Authorization Bypass Through User-Controlled Key vulnerability in CrocoBlock JetFormBuilder – Hierarchical Select jet-form-builder-hierarchical-select allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects JetFormBuilder – Hierarchical Select: from n/a through 1.0.10.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

通过用户控制密钥绕过授权机制

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
CrocoBlock	JetFormBuilder – Hierarchical Select	0 ~ 1.0.10	-

II. Public POCs for CVE-2026-123861

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-123861

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Other References for CVE-2026-123861 (1)

https://patchstack.com/database/wordpress/plugin/jet-form-builder-hierarchical-select/vulnerability/wordpress-jetformbuilder-hierarchical-select-plugin-1-0-10-insecure-direct-object-references-idor-vulnerability?_s_id=cve vdb-entry

https://www.cve.org/CVERecord?id=CVE-2026-123861

Same Patch Batch · CrocoBlock · 2026-11-07 · 4 CVEs total

CVE-2026-123477	6.5 MEDIUM	WordPress JetEngine plugin <= 3.9.0.2 - Cross Site Scripting (XSS) vulnerability
CVE-2026-123860	5.3 MEDIUM	WordPress JetFormBuilder plugin <= 3.6.8 - Content Injection vulnerability
CVE-2026-123483	5.3 MEDIUM	WordPress JetFormBuilder plugin <= 3.6.8 - Content Injection vulnerability

IV. Related Vulnerabilities

Same vendor: CrocoBlock

Same weakness: CWE-639