Missing Authorization Vulnerability in yshop-crm by Yixiang Tech
CVE-2026-109173

5.3MEDIUM

Key Information:

Vendor

Guchengwuyue

Status
Yshop-crm
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-109173?

The yshop-crm software, specifically versions up to 2.1.3, contains a vulnerability where authenticated back-office users can approve or reject invoices without proper authorization. This is due to the absence of necessary @PreAuthorize annotations in the CrmInvoiceController, which allows attackers to manipulate the invoice approval process simply by supplying any invoice ID, thereby bypassing intended security protocols.

Affected Version(s)

yshop-crm 0 <= 2.1.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-109173 - Proof of Concept

References

https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1...
exploit
https://github.com/guchengwuyue/yshop-crm/blob/a77250f7ac...
technical-description
https://github.com/guchengwuyue/yshop-crm/blob/a77250f7ac...
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

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yaqi Chao
.