dotonpaper Pinpoint Booking System Plugin up to 2.9.9.6.8 on WordPress Update dopbsp_woocommerce_add_to_cart cart_data input validation

Summaryinfo

A vulnerability labeled as problematic has been found in dotonpaper Pinpoint Booking System Plugin up to 2.9.9.6.8. Affected by this vulnerability is the function dopbsp_woocommerce_add_to_cart of the component Update Handler. Executing a manipulation of the argument cart_data can lead to input validation. This vulnerability appears as CVE-2026-12128. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in dotonpaper Pinpoint Booking System Plugin up to 2.9.9.6.8. It has been declared as problematic. This vulnerability affects the function dopbsp_woocommerce_add_to_cart of the component Update Handler. The manipulation of the argument cart_data with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-12128 since 06/12/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/15/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-58843). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• dotonpaper

Name

• Pinpoint Booking System Plugin

Version

• 2.9.9.6.0
• 2.9.9.6.1
• 2.9.9.6.2
• 2.9.9.6.3
• 2.9.9.6.4
• 2.9.9.6.5
• 2.9.9.6.6
• 2.9.9.6.7
• 2.9.9.6.8

CPE 2.3info

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• 🔒
• 🔒

CPE 2.2info

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• 🔒
• 🔒

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Once again VulDB remains the best source for vulnerability data.

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