CVE-2026-56829Public exploitNetwork attack vectorHinoki check available

Inventory manipulation via unguarded mutable variant state

Published Sep 15, 2026 · Updated Sep 15, 2026

Missing authorization in Shopper before 2.9.2 allows remote authenticated users to alter inventory for arbitrary product variants. VariantStock::stockAction performs stock mutations without edit_product_variants authorization, while its unlocked public variant property accepts a client-selected model identifier. An authenticated admin-panel account with browse-only access can inflate stock, reduce it, or force out-of-stock states beyond the displayed variant.

CVSS severity8.1
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in Shopper before 2.9.2 allows remote authenticated users to alter inventory for arbitrary product variants. VariantStock::stockAction performs stock mutations without edit_product_variants authorization, while its unlocked public variant property accepts a client-selected model identifier. An authenticated admin-panel account with browse-only access can inflate stock, reduce it, or force out-of-stock states beyond the displayed variant.

The record

CVE
CVE-2026-56829
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Shopper Labs
Product
Shopper
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.9.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shopper Labs · Shopperversion=< 2.9.2

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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