CVE-2026-40757— WordPress Château theme <= 1.2.1 - PHP Object Injection vulnerability
Quick assessment
Affected
Mikado-Themes Château
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.
Mikado-Themes Château是Mikado-Themes个人开发者的一款Château主题的Web中间件产品。 Mikado-Themes Château 1.2.1及之前版本存在反序列化漏洞，该漏洞源于PHP对象注入，可能导致未经身份验证的攻击者利用。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mikado-Themes | Château | n/a≤ 1.2.1 |
affected |
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I. Basic Information for CVE-2026-40757
Vulnerability Information
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Vulnerability Title
WordPress Château theme <= 1.2.1 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in Château <= 1.2.1 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Mikado-Themes Château 反序列化漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mikado-Themes Château是Mikado-Themes个人开发者的一款Château主题的Web中间件产品。 Mikado-Themes Château 1.2.1及之前版本存在反序列化漏洞，该漏洞源于PHP对象注入，可能导致未经身份验证的攻击者利用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mikado-Themes | Château | n/a ~ 1.2.1 | - |
|
II. Public POCs for CVE-2026-40757
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-40757 (1)
Same Patch Batch · Mikado-Themes · 2026-06-17 · 7 CVEs total
| CVE-2026-39537 | 8.1 HIGH | WordPress Mikado Core plugin <= 1.6 - Local File Inclusion vulnerability |
| CVE-2026-40731 | 8.1 HIGH | WordPress ChapterOne theme <= 1.7 - Local File Inclusion vulnerability |
| CVE-2026-40753 | 8.1 HIGH | WordPress EasyMeals theme <= 1.5.1 - PHP Object Injection vulnerability |
| CVE-2026-52707 | 8.1 HIGH | WordPress Kastell theme <= 2.0 - Local File Inclusion vulnerability |
| CVE-2026-40756 | 8.1 HIGH | WordPress Zoya theme <= 1.4 - PHP Object Injection vulnerability |
| CVE-2026-40733 | 8.1 HIGH | WordPress ShiftUp theme <= 1.3 - PHP Object Injection vulnerability |
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V. Comments for CVE-2026-40757
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