What’s Vulnerable › Vulnerabilities

CVE-2026-56829: Shopper: Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-15 · updated 2026-09-30
• Weakness: CWE-862

Description

Shopper is a Headless e-commerce Admin Panel. Prior to 2.9.2, packages/admin/src/Livewire/Components/Products/VariantStock.php exposes stockAction() without edit_product_variants authorization and leaves public $variant client mutable because it lacks the Livewire Locked attribute. Any authenticated admin-panel user, including staff with only browse_products, can select an arbitrary product variant and inventory location through component state, then submit a positive or negative quantity adjustment. This permits browse-only staff to inflate stock, reduce stock, or force out-of-stock states for variants outside the current page. This issue is fixed in version 2.9.2.

Affected products

• shopperlabs shopper: before 2.9.2

References

• https://github.com/shopperlabs/shopper/commit/bf72e2753e21296184596d507336c7d65ecd46ff
• https://github.com/shopperlabs/shopper/pull/570
• https://github.com/shopperlabs/shopper/releases/tag/v2.9.2
• https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f
• https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f

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