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CVE-2026-66690— WordPress GiveWP plugin <= 4.16.5 - Cross Site Scripting (XSS) vulnerability

Quick assessment

Affected
Nexcess GiveWP
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.

WordPress GiveWP是WordPress基金会的一个在线捐赠和筹款插件。 WordPress GiveWP 4.16.5及之前版本存在跨站脚本漏洞，该漏洞源于未对输入进行有效验证，可能导致未经身份验证的攻击者实施跨站脚本攻击。

CVSS 7.1 · High EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
Nexcess GiveWP n/a≤ 4.16.5 affected
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I. Basic Information for CVE-2026-66690

Vulnerability Information
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Vulnerability Title
WordPress GiveWP plugin <= 4.16.5 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Cross Site Scripting (XSS) in GiveWP <= 4.16.5 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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
WordPress GiveWP 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress GiveWP是WordPress基金会的一个在线捐赠和筹款插件。 WordPress GiveWP 4.16.5及之前版本存在跨站脚本漏洞，该漏洞源于未对输入进行有效验证，可能导致未经身份验证的攻击者实施跨站脚本攻击。
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
Nexcess GiveWP n/a ~ 4.16.5 -

II. Public POCs for CVE-2026-66690

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III. Intelligence Information for CVE-2026-66690

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Other References for CVE-2026-66690 (1)

Same Patch Batch · Nexcess · 2026-08-06 · 3 CVEs total

CVE-2026-28005 9.8 CRITICAL WordPress Kadence WooCommerce Email Designer plugin <= 1.5.19 - Privilege Escalation vulne
CVE-2026-66696 4.3 MEDIUM WordPress Gutenberg Blocks by Kadence Blocks plugin <= 3.7.8 - Sensitive Data Exposure vul

IV. Related Vulnerabilities

Same product: GiveWP
Same vendor: Nexcess
Same weakness: CWE-79

V. Comments for CVE-2026-66690

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