Auth bypass in Guchengwuyue Yshop-Crm
CVE-2026-92459
yshop-crm through 2.1.3 contains a missing authorization vulnerability in the CrmCluesController receiveCustomer endpoint that allows authenticated back-office users to claim sales leads without proper permission checks. Attackers can invoke the lead-claim endpoint to reassign leads from other employees to themselves by overwriting the ownerUserId field, with no access logging or quota validation to prevent bulk lead theft.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (37.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/LinYuanyi1/cve-request-poc/blob/master/yshop-crm/C06_crm_clues_recei… (exploit)
- github.com/guchengwuyue/yshop-crm/blob/5f5810a0e1e4ab0828523ec299bf973c2f9065d7… (technical-description)
- github.com/guchengwuyue/yshop-crm/blob/5f5810a0e1e4ab0828523ec299bf973c2f9065d7… (technical-description)
- github.com/guchengwuyue/yshop-crm/blob/5f5810a0e1e4ab0828523ec299bf973c2f9065d7… (technical-description)
- github.com/guchengwuyue/yshop-crm (product)
- www.vulncheck.com/advisories/yshop-crm-through-2.1.3-missing-authorization-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92459?
- CVE-2026-92459 is a medium-severity vulnerability in Guchengwuyue Yshop-Crm, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-09-16.
- How severe is CVE-2026-92459?
- Medium severity. CVSS v3 base score is 6.5 out of 10.