CVE-2026-102364
CVE-2026-102364
mall4j through 4.0 fails to validate the sysType field in sa-token sessions, allowing storefront customers to authenticate as back-office users by reusing their session tokens. Attackers can register on the public storefront and use their customer session token to access admin endpoints lacking @PreAuthorize permission checks, including menu listings, file uploads, and configuration endpoints.
Vulnerability class: Broken Authentication
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
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.
Weakness classification (CWE)
References
- github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf8043399fc9a… (exploit)
- github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf8043399fc9a… (exploit)
- github.com/gz-yami/mall4j (product)
- github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-sh… (technical-description)
- www.vulncheck.com/advisories/mall4j-through-4.0-improper-authentication-accepts… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-102364?
- CVE-2026-102364 is a medium-severity vulnerability, classified under Improper Authentication. CVSS score: 5.4/10. Published 2026-09-29.
- How severe is CVE-2026-102364?
- Medium severity. CVSS v3 base score is 5.4 out of 10.