Shopper: Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| shopperlabs | shopper | before 2.9.2 | 2.9.2 | Patch available | CNA |
| — | shopper/framework (Packagist) | before 2.9.2 | 2.9.2 | Patch available | GHSA-g3f9-g5vj-p62f |
- shopper Vendorshopperlabs Affected before 2.9.2 Fixed in 2.9.2 Patch available CNA
- shopper/framework (Packagist) Vendor— Affected before 2.9.2 Fixed in 2.9.2 Patch available GHSA-g3f9-g5vj-p62f
Remediation
- Fix · CNA shopper (shopperlabs) Fixed in 2.9.2
- Fix · GHSA-g3f9-g5vj-p62f shopper/framework (Packagist) Fixed in 2.9.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-56829
- 2026-10-03 Alias added: GHSA-g3f9-g5vj-p62f
References
Other 5
- https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f
- https://github.com/shopperlabs/shopper/pull/570
- https://github.com/shopperlabs/shopper/commit/bf72e2753e21296184596d507336c7d65ecd46ff
- https://github.com/shopperlabs/shopper/releases/tag/v2.9.2
- https://github.com/shopperlabs/shopper
More shopperlabs vulnerabilities
- TI-2026-83413 Stored XSS via SVG and HTML uploads in Shopper admin panel CVSS 3.1HIGH 8.7
- TI-2026-40978 Missing authorization in shopperlabs shopper CVSS 3.1HIGH 8.1
- TI-2026-83412 Missing authorization in Shopper lets staff delete product variants CVSS 3.1HIGH 8.1
- TI-2026-40977 Shopper: Missing authorization on product removal actions in CollectionProducts component CVSS 3.1HIGH 8.1
- TI-2026-40981 Shopper: Negative discount values accepted and propagated through order calculation pipeline CVSS 3.1MEDIUM 6.5
- TI-2026-35241 Shopper: Race condition on Discount.usage_limit allows silent over-redemption CVSS 3.1MEDIUM 5.9
Sources
- CVE-2026-56829 · CVE Program
- CVE-2026-56829 · NVD
- FIRST EPSS
- GHSA-g3f9-g5vj-p62f · GitHub Advisory Database · CC BY 4.0
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