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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
gz-yami:mall4j
References 5
https://github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf804…
NVD
https://github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf804…
NVD
https://github.com/gz-yami/mall4j
NVD
https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae…
NVD
https://www.vulncheck.com/advisories/mall4j-through-4.0-improper-authentication…
VulnCheck Advisory: mall4j through 4.0 Improper Authentication Accepts Storefront Tokens on Admin API