medium5.9
CVE-2026-47741
shopper/framework: Race condition on Discount.usage_limit allows silent over-redemption
Impact
Shopper is a Headless e-commerce Admin Panel. Prior to 2.8.0, CreateOrderFromCartAction::execute previously created the Order row before checking and incrementing the discount's total_use counter. Under concurrent checkout pressure (Black Friday, flash sale, viral coupon), the global usage_limit was silently exceeded: orders were committed with the discount fully applied to price_amount while the counter blocked at usage_limit. The merchant had no signal that an over-redemption had occurred. This vulnerability is fixed in 2.8.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | shopper/cart | < 2.8.0 | 2.8.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-9rh9-hf3w-9fgg
- https://github.com/shopperlabs/shopper/security/advisories/GHSA-9rh9-hf3w-9fgg
- https://github.com/shopperlabs/shopper/issues/510
- https://github.com/shopperlabs/shopper/pull/511
- https://github.com/shopperlabs/shopper/commit/fcd0c5920588702df5b874f432b1042abd77a50b
- https://github.com/shopperlabs/shopper/releases/tag/v2.8.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-47741