CVE-2026-77999
2026-09-03
13h06 +00:00
13h06 +00:00
特定のCVEの通知
特定のCVEの変更情報をいち早くお届けします。
CVE の説明
Joomla Extension - j2commerce.com - Unauthenticated PayPal callback forgery leading to order confirmation fraud in J2Store 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6 - The PayPal IPN listener's signature check (`_validateIPN()`) accepted `UNVERIFIED` and any non-`INVALID` response as valid, made its verification request with `CURLOPT_SSL_VERIFYPEER` disabled, and stored its verdict in a field nothing downstream ever checked — so processing continued regardless of the outcome. Separately, the paid-amount comparison only ran when `mc_gross` was a positive number; omitting the field from the POST body (`floatval(null) == 0`) skipped the check entirely. Combined with a merchant-configured `receiver_email` and a sequential, enumerable order id read from the `custom` field, an anonymous POST was enough to move a pending order straight to `CONFIRMED` with no payment, or force another customer's pending order to `FAILED`. `paypalv2.php` performed no amount check under any circumstances.
CVE の情報
関連する弱点
| 弱点名 | 出典 | |
|---|---|---|
| External Control of Assumed-Immutable Web Parameter The web application does not sufficiently verify inputs that are assumed to be immutable but are actually externally controllable, such as hidden form fields. |
||
| Client-Side Enforcement of Server-Side Security The product includes a server that relies on the client to implement a protection mechanism that is intended to protect the server. |
