Medium 5.9Published May 29, 2026

CVE-2026-47741Shopper: Race condition on Discount.usage_limit allows silent over-redemption

Updated under an hour ago (Oct 26, 2026, 11:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-362
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: May 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

shopperlabs shopper shopperlabs:shopper (from the name)	before 2.8.0	CNA record

References

https://github.com/shopperlabs/shopper/security/advisories/GHSA-9rh9-hf3w-9fggx-refsource-confirm
https://github.com/shopperlabs/shopper/issues/510x-refsource-misc
https://github.com/shopperlabs/shopper/pull/511x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.