Authorization Bypass in CoreShop's OrderController Affects User Orders
CVE-2026-108696

5.3MEDIUM

Key Information:

Vendor

Coreunion

Status
Coreshop
Vendor
CVE Published:
11 October 2026

What is CVE-2026-108696?

CoreShop versions up to 1.5.5 have a significant authorization bypass vulnerability within the OrderController. This flaw allows authenticated users to manipulate and act upon other users' orders by exploiting user-controlled identifiers. Attackers can confirm the receipt of orders not belonging to them by omitting certain required data in the OrderConfirm process or providing a different reshipId in the SendReship function, thus potentially overwriting sensitive return tracking information. Proper mitigation and updates are essential to safeguard customer data and maintain application integrity.

Affected Version(s)

CoreShop 0 <= 1.5.5

References

https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/SkVjopPsGe
third-party-advisory
https://github.com/CoreUnion/CoreShop/blob/ca7408b025bc5f...
technical-description
https://github.com/CoreUnion/CoreShop/blob/ca7408b025bc5f...
technical-description

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

hieuPenguinnn
.