CVE-2026-109171

MEDIUM 4.3

yshop-crm through 2.1.3 Missing Authorization via /admin-api/crm/contract/check

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	guchengwuyue
Product	yshop-crm
Published	Oct 12, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

guchengwuyue / yshop-crm

0 ≤ 2.1.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/yshop-crm/poc_crm_contract_check.py github.com: https://github.com/guchengwuyue/yshop-crm/blob/a77250f7ace63d5b6b363841d9ff441e0e2a9a6b/yshop-crm/yshop-module-crm/yshop-module-crm-biz/src/main/java/co/yixiang/yshop/module/crm/controller/admin/crmcontract/CrmContractController.java#L100-L106 github.com: https://github.com/guchengwuyue/yshop-crm/blob/a77250f7ace63d5b6b363841d9ff441e0e2a9a6b/yshop-crm/yshop-module-crm/yshop-module-crm-biz/src/main/java/co/yixiang/yshop/module/crm/service/crmcontract/CrmContractServiceImpl.java#L315-L432 github.com: https://github.com/guchengwuyue/yshop-crm/blob/a77250f7ace63d5b6b363841d9ff441e0e2a9a6b/yshop-crm/sql/yshop-crm-open-source.sql#L2637 vulncheck.com: https://www.vulncheck.com/advisories/yshop-crm-through-2.1.3-missing-authorization-via-admin-api-crm-contract-check

Credits

Yaqi Chao