Vulnerability · Published Sep 15, 2026 · Assigned by GitHub_M
CVE-2026-56829Shopper: Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component
High 8.1
In plain English
A high-severity missing authorization in shopper from shopperlabs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | shopper/framework | 2.9.2 | GHSA-g3f9-g5vj-p62f |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| shopperlabs | shopper | < 2.9.2 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References
- https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f x_refsource_CONFIRM
- https://github.com/shopperlabs/shopper/pull/570 x_refsource_MISC
- https://github.com/shopperlabs/shopper/commit/bf72e2753e21296184596d507336c7d65ecd46ff x_refsource_MISC
- https://github.com/shopperlabs/shopper/releases/tag/v2.9.2 x_refsource_MISC