# CVE-2026-40098

> Vulnerability · severity: **MEDIUM** (CVSS 5.4).

## Description

Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to version 20.17.0, the shared wishlist add-to-cart endpoint authorizes access with a public `sharing_code`, but loads the acted-on wishlist item by a separate global `wishlist_item_id` and never verifies that the item belongs to the shared wishlist referenced by that code. This lets an attacker use a valid shared wishlist code for wishlist A and a wishlist item ID belonging to victim wishlist B to import victim item B into the attacker's cart through the shared wishlist flow for wishlist A. Because the victim item's stored `buyRequest` is reused during cart import, the victim's private custom-option data is copied into the attacker's quote. If the product uses a file custom option, this can be elevated to cross-user file disclosure because the imported file metadata is preserved and the download endpoint is not ownership-bound. Version 20.17.0 patches the issue.

## Key facts

- **CVE ID:** CVE-2026-40098
- **Published:** 2026-04-20
- **CVSS severity:** MEDIUM
- **CVSS base score:** 5.4
- **CWE codes:** CWE-862

## Affected products

- `openmage:magento`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40098

## Citation

> AI Analytics. CVE-2026-40098. Retrieved 2026-07-20 from https://api.ai-analytics.org/cve/CVE-2026-40098. Derived from NIST NVD. Licensed CC0.

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