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CVE-2026-12128— Pinpoint Booking System <= 2.9.9.6.8 - Unauthenticated Improper Input Validation to Price Manipulation via 'cart_data' Parameter

Quick assessment

Affected
dotonpaper Pinpoint Booking System – Version 2
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 Pinpoint Booking System是WordPress基金会的一款网站预约管理插件。 WordPress Pinpoint Booking System 2.9.9.6.8及之前版本存在输入验证错误漏洞，该漏洞源于cart_data参数处理不当，未进行身份验证和nonce验证，且服务端未重新计算价格，攻击者可提交恶意price_total值覆盖WooCommerce结账价格，导致以任意价格购买可预订产品。

CVSS 5.3 · Medium EPSS 0.61% · P47

Affected Version Matrix 1

VendorProduct Version RangeStatus
dotonpaper Pinpoint Booking System – Version 2 ≤ 2.9.9.6.8 affected
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I. Basic Information for CVE-2026-12128

Vulnerability Information
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Vulnerability Title
Pinpoint Booking System <= 2.9.9.6.8 - Unauthenticated Improper Input Validation to Price Manipulation via 'cart_data' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Pinpoint Booking System – Version 2 plugin for WordPress is vulnerable to Price Manipulation via the `cart_data` parameter in all versions up to, and including, 2.9.9.6.8. This is due to the `dopbsp_woocommerce_add_to_cart` AJAX action being registered via `wp_ajax_nopriv_*` with no authentication, no nonce verification, and no server-side recalculation of pricing — the `update` handler reads `price_total` directly from the attacker-controlled `cart_data` POST parameter and persists it to the database via `$wpdb->insert()` without validating it against the calendar's configured pricing. The `woocommerce_before_calculate_totals` callback subsequently reads the stored attacker-supplied value back from the database and passes it directly to `$product->set_price()` without recomputing from calendar settings. This makes it possible for unauthenticated attackers to override the WooCommerce checkout price of any bookable product tied to a booking calendar to an arbitrary value, effectively enabling the purchase of any such product at a self-chosen price.
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
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Pinpoint Booking System 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Pinpoint Booking System是WordPress基金会的一款网站预约管理插件。 WordPress Pinpoint Booking System 2.9.9.6.8及之前版本存在输入验证错误漏洞，该漏洞源于cart_data参数处理不当，未进行身份验证和nonce验证，且服务端未重新计算价格，攻击者可提交恶意price_total值覆盖WooCommerce结账价格，导致以任意价格购买可预订产品。
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
dotonpaper Pinpoint Booking System – Version 2 0 ~ 2.9.9.6.8 -

II. Public POCs for CVE-2026-12128

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III. Intelligence Information for CVE-2026-12128

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Patches & Fixes for CVE-2026-12128 (5)

Vendor Advisories for CVE-2026-12128 (1)

Other References for CVE-2026-12128 (1)

IV. Related Vulnerabilities

Same product: Pinpoint Booking System – Version 2
Same vendor: dotonpaper
Same weakness: CWE-20

V. Comments for CVE-2026-12128

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