SEPTEMBER 17, 2026
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Case File

CVE-2026-56831

MEDIUM · CVSS 6.5 EPSS 0.41% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The Shopper Headless e-commerce Admin Panel prior to version 2.9.0 is vulnerable due to its /cpanel/discounts interface allowing negative fixed_amount discount values, which can lead to inflated order totals and compromised financial data integrity. While there is no direct customer-facing exploitation path, the potential for incorrect pricing necessitates immediate attention from e-commerce platforms and administrators using affected versions. Organizations should prioritize upgrading to version 2.9.0 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-56831
Severity
MEDIUM
CVSS
6.5
EPSS
0.41%

Original NVD Description

Shopper is a Headless e-commerce Admin Panel. Prior to 2.9.0, the /cpanel/discounts administrative interface accepts negative fixed_amount discount values, persists them in sh_discounts, and passes them through vendor/shopper/cart/src/Discounts/DiscountCalculator.php and vendor/shopper/cart/src/Pipelines/Calculate.php without enforcing a positive-value invariant. Because the calculation subtracts discountTotal from the subtotal, a negative discount increases the resulting order total instead of reducing it. Malformed discount records can therefore cause incorrect pricing and financial data integrity failures, although the advisory does not establish a customer-facing exploitation path. This issue is fixed in version 2.9.0.