# CVE-2026-108690: mall4j information disclosure via cart endpoint SQL injection

Source: https://junglewise.ai/threats/cve-2026-108690-mall4j-through-4-0-contains-an-information-disclosure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-11. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-108690 · Severity: medium · CVSS 4.3 · Published 2026-10-11

mall4j is an e-commerce platform that manages online shopping carts and transactions. An authenticated customer can view other shoppers' abandoned cart contents by exploiting a SQL operator precedence flaw in the cart expiry endpoint, exposing product details, quantities, SKUs, and shop information across all customers.

Technologies: [Gz-Yami Mall4j](https://junglewise.ai/threats/technologies/mall4j). Vendors: [Gz-Yami](https://junglewise.ai/threats/vendors/gz-yami).

## Quick answers

**Is CVE-2026-108690 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108690 being exploited in the wild.

**How severe is CVE-2026-108690?** Medium severity, with a CVSS score of 4.3, published 11 October 2026.

**Which products and versions are affected?** Gz-Yami Mall4j through 4.0.

**Is there a fix for CVE-2026-108690?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-108690 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-108690?** Check whether you run Gz-Yami Mall4j at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in the BasketMapper.xml SQL query for the GET /p/shopCart/expiryProdList endpoint, where an OR operator precedence error causes the user_id filter to apply only to the second condition, leaking all basket rows where products or SKUs are off-shelf regardless of user ownership. Any authenticated customer can request this endpoint without elevated privileges to retrieve other users' cart data.

## Affected products

- gz-yami mall4j through 4.0

## Timeline

- 2026-10-11: disclosed

## References

- [https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/mall4j/poc_shopcart_expiry_prodlist.py](https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/mall4j/poc_shopcart_expiry_prodlist.py)
- [https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-api/src/main/java/com/yami/shop/api/controller/ShopCartController.java](https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-api/src/main/java/com/yami/shop/api/controller/ShopCartController.java)

## Related threats

- [mall4j improper authorization in cart deletion](https://junglewise.ai/threats/cve-2026-108691-mall4j-through-4-0-contains-an-improper-authorization)
- [mall4j insufficient session expiration in token refresh](https://junglewise.ai/threats/cve-2026-102367-mall4j-through-4-0-contains-an-insufficient-session-expiration)
- [mall4j authorization bypass in UserAddrController endpoints](https://junglewise.ai/threats/cve-2026-102365-mall4j-through-4-0-fails-to-enforce-authorization-checks-on-get)
- [mall4j session privilege escalation via sysType field](https://junglewise.ai/threats/cve-2026-102364-mall4j-through-4-0-fails-to-validate-the-systype-field-in-sa)
- [mall4j product review deletion auth bypass in ProdCommController](https://junglewise.ai/threats/cve-2026-102362-mall4j-through-4-0-fails-to-implement-authentication-controls-on)