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CVE-2026-42686— WordPress EventPrime plugin <= 4.3.2.1 - Cross Site Scripting (XSS) vulnerability

Quick assessment

Affected
EventPrime EventPrime
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.

EventPrime EventPrime是EventPrime的插件程序。 EventPrime 4.3.2.1及之前版本存在跨站脚本漏洞，该漏洞源于容易受到跨站脚本攻击。

CVSS 7.1 · High EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
EventPrime EventPrime n/a≤ 4.3.2.1 affected
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I. Basic Information for CVE-2026-42686

Vulnerability Information
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Vulnerability Title
WordPress EventPrime plugin <= 4.3.2.1 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Subscriber Cross Site Scripting (XSS) in EventPrime <= 4.3.2.1 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
EventPrime 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EventPrime EventPrime是EventPrime的插件程序。 EventPrime 4.3.2.1及之前版本存在跨站脚本漏洞，该漏洞源于容易受到跨站脚本攻击。
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-2026-42686

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III. Intelligence Information for CVE-2026-42686

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Vendor Advisories for CVE-2026-42686 (1)

Same Patch Batch · EventPrime · 2026-06-15 · 3 CVEs total

CVE-2026-42687 8.1 HIGH WordPress EventPrime plugin <= 4.3.2.1 - PHP Object Injection 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
Same vendor: EventPrime
Same weakness: CWE-79

V. Comments for CVE-2026-42686

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