Missing Authorization Vulnerability in yshop-crm by Yixiang
CVE-2026-109172

5.3MEDIUM

Key Information:

Vendor

Guchengwuyue

Status
Yshop-crm
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-109172?

yshop-crm versions up to 2.1.3 are vulnerable due to a missing authorization check that allows any authenticated back-office user to approve or reject receivables records via a specific endpoint. The absence of a @PreAuthorize annotation and commented-out checks in the service implementation enables attackers to manipulate approval processes. By crafting specific requests, attackers can inflate the return_money associated with contracts and falsify approval logs, leading to potential financial exploitation and integrity issues.

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-2026-109172 - 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
.