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CVE-2026-4911— Booking Package <= 1.7.06 - Unauthenticated Price Manipulation via 'amount' Parameter

Quick assessment

Affected
masaakitanaka Booking Package
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Booking Package 1.7.06及之前版本存在安全漏洞，该漏洞源于价格操纵问题，可能导致未经身份验证的攻击者以任意价格预订服务。

CVSS 5.3 · Medium EPSS 0.53% · P43

Affected Version Matrix 1

VendorProduct Version RangeStatus
masaakitanaka Booking Package ≤ 1.7.06 affected
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I. Basic Information for CVE-2026-4911

Vulnerability Information
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Vulnerability Title
Booking Package <= 1.7.06 - Unauthenticated Price Manipulation via 'amount' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Booking Package plugin for WordPress is vulnerable to Price Manipulation in versions up to, and including, 1.7.06 This is due to the intentForStripe() function passing user-controlled $_POST['amount'] directly to the Stripe PaymentIntent API without validation, and the commitStripe() function ignoring the server-calculated amount when confirming the payment. While the server correctly calculates the booking cost via getAmount() based on services, guests, taxes, and coupons, this calculated amount is never validated against or used to update the PaymentIntent because the critical code in CreditCard.php that would include the calculated amount in the PaymentIntent update is commented out. This makes it possible for unauthenticated attackers to book services at arbitrary prices (e.g., $0.01 instead of $500.00) by manipulating the amount parameter during PaymentIntent creation and completing the booking with the fraudulent payment.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对假设不可变Web参数的外部可控制
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Booking Package 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Booking Package 1.7.06及之前版本存在安全漏洞，该漏洞源于价格操纵问题，可能导致未经身份验证的攻击者以任意价格预订服务。
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
masaakitanaka Booking Package 0 ~ 1.7.06 -

II. Public POCs for CVE-2026-4911

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III. Intelligence Information for CVE-2026-4911

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Vendor Advisories for CVE-2026-4911 (1)

IV. Related Vulnerabilities

Same product: Booking Package
Same vendor: masaakitanaka
Same weakness: CWE-472

V. Comments for CVE-2026-4911

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