CVE-2026-108691: mall4j through 4.0 Operator Precedence Error Deletes Other Users' Cart Items via /p/shopCart/cleanExpiryProdList
mall4j through 4.0 contains an improper authorization vulnerability that allows authenticated storefront customers to delete other shoppers' cart items through an operator precedence error in the cleanExpiryProdList SQL statement. Attackers can send one DELETE request to /p/shopCart/cleanExpiryProdList to remove every user's cart entries for off-shelf products, which do not return when products are restocked.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
Any authenticated storefront customer can exploit it. No elevated administrative privileges or user interaction are required.
What data or functionality is affected?
An attacker can send a single request to /p/shopCart/cleanExpiryProdList that deletes cart entries belonging to other users when those entries are for off-shelf products. The deleted entries do not return if the products are later restocked.
What should teams investigate to determine whether they may have been affected?
Review requests to /p/shopCart/cleanExpiryProdList and look for unexpected deletion of cart entries associated with off-shelf products across multiple customer accounts. Investigate whether affected shoppers' cart items remained absent after the related products were restocked.