CVE-2026-42687— WordPress EventPrime plugin <= 4.3.2.1 - PHP Object Injection vulnerability
Possible ATT&CK Techniques 2AI
T1190 · Exploit Public-Facing Application T1068 · Exploitation for Privilege EscalationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| EventPrime | EventPrime | n/a≤ 4.3.2.1 | affected |
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I. Basic Information for CVE-2026-42687
Vulnerability Information
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Vulnerability Title
WordPress EventPrime plugin <= 4.3.2.1 - PHP Object Injection vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Unauthenticated PHP Object Injection in EventPrime <= 4.3.2.1 versions.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
EventPrime 反序列化漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EventPrime EventPrime是EventPrime的插件程序。 EventPrime 4.3.2.1及之前版本存在反序列化漏洞，该漏洞源于容易受到PHP对象注入攻击，可能导致未经验证的攻击者执行恶意代码。
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 |
|---|---|---|---|---|
| EventPrime | EventPrime | n/a ~ 4.3.2.1 | - |
II. Public POCs for CVE-2026-42687
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · EventPrime · 2026-06-15 · 3 CVEs total
| CVE-2026-42686 | 7.1 HIGH | WordPress EventPrime plugin <= 4.3.2.1 - Cross Site Scripting (XSS) vulnerability |
| CVE-2026-39518 | 7.1 HIGH | WordPress EventPrime plugin <= 4.3.0.0 - Insecure Direct Object References (IDOR) vulnerab |
IV. Related Vulnerabilities
Same product: EventPrime
- CVE-2026-42686
WordPress EventPrime plugin <= 4.3.2.1 - Cross Site Scriptin - CVE-2026-39518
WordPress EventPrime plugin <= 4.3.0.0 - Insecure Direct Obj - CVE-2026-42669
WordPress EventPrime plugin <= 4.3.2.0 - Broken Access Contr - CVE-2026-24378
WordPress EventPrime plugin <= 4.2.8.0 - PHP Object Injectio - CVE-2025-69358
WordPress EventPrime plugin <= 4.2.6.0 - Broken Access Contr
Same vendor: EventPrime
- CVE-2026-42686
WordPress EventPrime plugin <= 4.3.2.1 - Cross Site Scriptin - CVE-2026-39518
WordPress EventPrime plugin <= 4.3.0.0 - Insecure Direct Obj - CVE-2026-42669
WordPress EventPrime plugin <= 4.3.2.0 - Broken Access Contr - CVE-2023-45637
WordPress EventPrime Plugin <= 3.1.5 is vulnerable to Cross - CVE-2023-35884
WordPress EventPrime Plugin <= 3.0.5 is vulnerable to Cross
Same weakness: CWE-502
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V. Comments for CVE-2026-42687
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