CVE-2026-105886— WordPress Ultimate Post Kit plugin <= 4.5.5 - Broken Access Control vulnerability
Quick assessment
Affected
BdThemes Ultimate Post Kit
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.
BdThemes Ultimate Post Kit（插件名称：ultimate-post-kit）中存在缺少授权检查的安全漏洞，导致攻击者可利用配置不当的访问控制安全级别。该问题影响 Ultimate Post Kit 的所有版本，从初始版本（n/a）至 4.5.5 版本。
Possible ATT&CK Techniques 1 AI
T1155Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| BdThemes | Ultimate Post Kit | ≤ 4.5.5 |
affected |
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I. Basic Information for CVE-2026-105886
Vulnerability Information
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Vulnerability Title
WordPress Ultimate Post Kit plugin <= 4.5.5 - Broken Access Control vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Missing Authorization vulnerability in BdThemes Ultimate Post Kit ultimate-post-kit allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ultimate Post Kit: from n/a through 4.5.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| BdThemes | Ultimate Post Kit | 0 ~ 4.5.5 | - |
|
II. Public POCs for CVE-2026-105886
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-105886 (1)
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V. Comments for CVE-2026-105886
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