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CVE-2026-9253— WP Cost Estimation & Payment Forms Builder (E&P Forms) <= 10.5.97 - Unauthenticated Stored Cross-Site Scripting via 'customerInfos' Parameter

CVSS 7.2 · High EPSS 0.20% · P10

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 2

VendorProductVersion RangeStatus
loopusWP Cost Estimation & Payment Forms Builder≤ 10.5.97affected
≤ 10.5.97affected
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I. Basic Information for CVE-2026-9253

Vulnerability Information
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Vulnerability Title
WP Cost Estimation & Payment Forms Builder (E&P Forms) <= 10.5.97 - Unauthenticated Stored Cross-Site Scripting via 'customerInfos' Parameter
Source: NVD (National Vulnerability Database)
Vulnerability Description
The WP Cost Estimation & Payment Forms Builder (E&P Forms) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'customerInfos' parameter in all versions up to, and including, 10.5.97 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
WP Cost Estimation & Payment Forms Builder 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WP Cost Estimation WP Cost Estimation & Payment Forms Builder是WP Cost Estimation公司的一款成本估算与表单构建插件。 WP Cost Estimation & Payment Forms Builder 10.5.97及之前版本存在跨站脚本漏洞，该漏洞源于'customerInfos'参数输入清理和输出转义不足，可能导致未经身份验证的攻击者在页面中注入任意Web脚本，当用户访问注入页面时执行。
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

VendorProductAffected VersionsCPESubscribe
loopusWP Cost Estimation & Payment Forms Builder 0 ~ 10.5.97 -
loopusWP Cost Estimation & Payment Forms Builder 0 ~ 10.5.97 -

II. Public POCs for CVE-2026-9253

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III. Intelligence Information for CVE-2026-9253

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Vendor Advisories for CVE-2026-9253 (1)

Vendor Pages for CVE-2026-9253 (1)

IV. Related Vulnerabilities

Same product: WP Cost Estimation & Payment Forms Builder
Same vendor: loopus
Same weakness: CWE-79

V. Comments for CVE-2026-9253

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