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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

Quick assessment

Affected
loopus WP Cost Estimation & Payment Forms Builder
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.

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。

CVSS 7.2 · High EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 2

VendorProduct Version RangeStatus
loopus WP Cost Estimation & Payment Forms Builder ≤ 10.5.97 affected
≤ 10.5.97 affected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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
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

Vendor Product Affected Versions CPE Subscribe
loopus WP Cost Estimation & Payment Forms Builder 0 ~ 10.5.97 -
loopus WP 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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