High severity · published Sep 15, 2026
CVE-2026-56829
Shopper: Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component
8.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SH
shopper · shopperlabs
< 2.9.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56829
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56829
github.com
https://github.com/shopperlabs/shopper/commit/bf72e2753e21296184596d507336c7d65ecd46ff
github.com
https://github.com/shopperlabs/shopper/pull/570
github.com
https://github.com/shopperlabs/shopper/releases/tag/v2.9.2
github.com
https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f
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