TI-2026-65364 Aliases CVE-2026-102366 GHSA-ffmx-jjx9-c9cx

mall4j through 4.0 Unrestricted File Upload in Admin File Endpoints

MEDIUM 44CWE-434Published 2026-09-28 · Updated 2026-09-29

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: Present
Impact type: Code execution
Confidentiality · integrity · availability: None · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

mall4j through 4.0 contains an unrestricted file upload vulnerability in FileController endpoints that lack authorization checks and accept arbitrary file types without validation. Attackers with any authenticated token can upload HTML or SVG files that execute scripts in administrator browsers when accessed from the local storage path, resulting in stored cross-site scripting.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00163 5th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
gz-yami	mall4j	up to 4.0	—	No fix listed	CNA

mall4j Vendorgz-yami Affected up to 4.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-102366
2026-10-03 Alias added: GHSA-ffmx-jjx9-c9cx

References

Exploit 1

https://github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf8043399fc9ac96c/mall4j/A03_admin_file_upload_xss.py

Other 3

TI-2026-65359 mall4j through 4.0 Missing Authentication in Password Update Endpoint CVSS 4.0CRITICAL 9.3
TI-2026-65360 mall4j through 4.0 Missing Authentication in Product Review Deletion CVSS 4.0MEDIUM 6.9
TI-2026-75401 Authorization bypass in Mall4cloud exposes buyer shipping addresses CVSS 4.0HIGH 7.1
TI-2026-65363 mall4j through 4.0 Missing Authorization in Admin User Address Endpoints CVSS 4.0HIGH 7.1
TI-2026-65361 mall4j through 4.0 Unauthenticated Shipment Tracking Disclosure via Order Number CVSS 4.0MEDIUM 6.3
TI-2026-70671 Operator precedence error in mall4j deletes other users' cart items CVSS 4.0MEDIUM 5.3

See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences