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mall4j EUVDEUVD-2026-88579

| CVE-2026-102363 MEDIUM
Missing Authentication for Critical Function (CWE-306)
2026-09-29 disclosure@vulncheck.com GHSA-6rjg-gfrv-7842
Authentication Bypass Java
6.3
CVSS 4.0 · Vendor: vulncheck
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Severity by source

Vendor (vulncheck) PRIMARY
6.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.3 MEDIUM

Remote, unauthenticated, low-complexity read of a single API endpoint (AV:N/AC:L/PR:N/UI:N); only low confidentiality impact and no integrity or availability effect.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (vulncheck).

CVSS VectorVendor: vulncheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Metadata Corrected
Sep 29, 2026 - 00:40 vuln.today
tag: Java added
Analysis Generated
Sep 29, 2026 - 00:38 vuln.today
CVE Published
Sep 29, 2026 - 00:17 cve.org
MEDIUM 6.3

DescriptionCVE.org

mall4j through 4.0 contains a missing authentication vulnerability in the DeliveryController checkDelivery endpoint that allows unauthenticated attackers to read shipment tracking information by supplying an order number parameter. Attackers can access carrier names, waybill numbers, and complete logistics trails for any order without authentication or ownership verification.

AnalysisAI

Unauthenticated shipment-tracking disclosure in mall4j through version 4.0 lets remote attackers retrieve carrier names, waybill numbers, and full logistics trails for any order by calling the yami-shop-api DeliveryController checkDelivery endpoint with an order number and no credentials. Because the handler performs neither authentication nor ownership verification, any caller who can supply a valid order number - and sequential or guessable numbering would permit enumeration - can harvest tracking data in bulk. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
technique details hidden
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Vulnerability AssessmentAI

Exploitation Exploitable by remote unauthenticated attackers against the mall4j yami-shop-api DeliveryController checkDelivery endpoint, which returns shipment tracking data for a supplied order-number parameter without any authentication or ownership verification. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a real but low-to-moderate priority information-disclosure issue, not a high-severity emergency. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch was identified at time of analysis, so operators must apply compensating controls rather than wait for an upstream fix. … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-88579 vulnerability details – vuln.today
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