---
id: CVE-2026-102361
title: >-
  mall4j through 4.0 contains a missing authentication vulnerability in the PUT
  /user/updatePwd endpoint that allows unauthenticated attackers to reset any
  storefront account password
summary: >-
  mall4j through 4.0 contains a missing authentication vulnerability in the PUT
  /user/updatePwd endpoint that allows unauthenticated attackers to reset any
  storefront account password. Attackers can supply a target username in the
  request …
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-306
vendor: gz-yami
product: mall4j
affected:
  - mall4j <= 4.0
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T00:17:03.183'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102361'
references:
  - url: >-
      https://github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf8043399fc9ac96c/mall4j/A01_updatepwd_account_takeover.py
    label: disclosure@vulncheck.com
  - url: 'https://github.com/gz-yami/mall4j'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-api/src/main/java/com/yami/shop/api/controller/UserRegisterController.java#L78-L100
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/mall4j-through-4.0-missing-authentication-in-password-update-endpoint
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T00:24:04.803Z'
---

## Overview

mall4j through 4.0 contains a missing authentication vulnerability in the PUT /user/updatePwd endpoint that allows unauthenticated attackers to reset any storefront account password. Attackers can supply a target username in the request body to overwrite passwords without verification, enabling account takeover and access to orders and personal data.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.