Auth bypass in Guchengwuyue Yshop-Crm
CVE-2026-111703
yshop-crm through 2.1.3 contains an insecure direct object reference vulnerability that allows authenticated sales users to access other users' customer records by supplying arbitrary ids. Attackers can enumerate ids against the get, update, delete and do-open endpoints to read contact details, overwrite or delete customers, or release them into the public pool.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/yshop-crm-customer-idor-and-missing-authz (third-party-advisory)
- github.com/guchengwuyue/yshop-crm/blob/a93846584877ed5f6ffcaeeb7182d1707a21a221… (technical-description)
- github.com/guchengwuyue/yshop-crm/blob/a93846584877ed5f6ffcaeeb7182d1707a21a221… (technical-description)
- www.vulncheck.com/advisories/yshop-crm-through-2.1.3-idor-via-crm-customer-by-i… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111703?
- CVE-2026-111703 is a medium-severity vulnerability in Guchengwuyue Yshop-Crm, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.3/10. Published 2026-10-16.
- How severe is CVE-2026-111703?
- Medium severity. CVSS v3 base score is 6.3 out of 10.