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CVE-2026-109171— yshop-crm through 2.1.3 Missing Authorization via /admin-api/crm/contract/check

Quick assessment

Affected
guchengwuyue yshop-crm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

yshop-crm 2.1.3 及之前版本存在一个缺失授权控制的漏洞，允许任何已认证的后端管理用户通过调用 POST /admin-api/crm/contract/check 接口批准或拒绝合同。由于 CrmContractController 类未使用 @PreAuthorize 注解进行权限控制，且审批者检查相关的代码被注释，攻击者可以利用该漏洞批准合同，从而篡改客户交易和购买数据，或者拒绝合同，使产品退回库存。

CVSS 4.3 · Medium

Possible ATT&CK Techniques 1 AI

T1098 · Account Manipulation

Affected Version Matrix 1

VendorProduct Version RangeStatus
guchengwuyue yshop-crm ≤ 2.1.3 affected
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I. Basic Information for CVE-2026-109171

Vulnerability Information
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Vulnerability Title
yshop-crm through 2.1.3 Missing Authorization via /admin-api/crm/contract/check
Source: CVE Program / CVE List V5
Vulnerability Description
yshop-crm through 2.1.3 contains a missing authorization vulnerability that allows any authenticated back-office user to approve or reject contracts by calling POST /admin-api/crm/contract/check. Because CrmContractController lacks @PreAuthorize and approver checks are commented out, attackers can approve contracts to alter customer deal and purchase data or reject them to return products to stock.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
guchengwuyue yshop-crm 0 ~ 2.1.3 -

II. Public POCs for CVE-2026-109171

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III. Intelligence Information for CVE-2026-109171

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Patches & Fixes for CVE-2026-109171 (2)

Proof of Concept for CVE-2026-109171 (1)

Other References for CVE-2026-109171 (2)

Same Patch Batch · guchengwuyue · 2026-10-12 · 3 CVEs total

CVE-2026-109172 4.3 MEDIUM yshop-crm through 2.1.3 Missing Authorization via contract-receivables check endpoint
CVE-2026-109173 4.3 MEDIUM yshop-crm through 2.1.3 Missing Authorization via invoice check endpoint

IV. Related Vulnerabilities

Same product: yshop-crm
Same vendor: guchengwuyue
Same weakness: CWE-862

V. Comments for CVE-2026-109171

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