Executive brief
PrestaShop's blockwishlist module manages customer wishlists for e-commerce stores. The module fails to properly validate that an authenticated customer owns a wishlist before generating shareable links, allowing attackers to enumerate and retrieve other customers' private wishlist contents by sequentially trying wishlist identifiers.
Technical details
The vulnerability is an authorization bypass in the getUrlByIdWishListAction method of the blockwishlist controller. When an authenticated user requests a share token for a wishlist by identifier, the application generates and returns a valid share link without verifying that the requesting user owns the target wishlist. An attacker can exploit this by supplying sequential or enumerated wishlist IDs to obtain valid share tokens and access other customers' wishlists. The issue affects blockwishlist versions through 3.0.2 and requires an authenticated session but no additional privileges.
Affected products
- PrestaShop blockwishlist through 3.0.2
Timeline
- 2026-09-16: disclosed