---
title: "CVE-2026-102361: mall4j - Authentication Bypass"
description: "mall4j through 4.0 contains a broken authentication vulnerability caused by missing authentication in the PUT /user/updatePwd endpoint, letting unauthenticated attackers reset any storefront account password, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-102361/
---

# CVE-2026-102361 mall4j - Authentication Bypass

mall4j through 4.0 contains a broken authentication vulnerability caused by missing authentication in the PUT /user/updatePwd endpoint, letting unauthenticated attackers reset any storefront account password, exploit requires no authentication.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.37% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-102361)

## Details

Type

Authentication Bypass

Impact

Broken Access Control, Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Published

29 September 2026

Updated

15 October 2026

Weakness

[CWE-306](https://cwe.mitre.org/data/definitions/306.html)

## Vendor fix

Update to the latest version that fixes the missing authentication in the PUT /user/updatePwd endpoint.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-102361](https://nvd.nist.gov/vuln/detail/CVE-2026-102361)
- [https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-api/src/main/java/com/yami/shop/api/controller/UserRegisterController.java#L78-L100](https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-api/src/main/java/com/yami/shop/api/controller/UserRegisterController.java#L78-L100)
- [https://www.vulncheck.com/advisories/mall4j-through-4.0-missing-authentication-in-password-update-endpoint](https://www.vulncheck.com/advisories/mall4j-through-4.0-missing-authentication-in-password-update-endpoint)
- [https://github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf8043399fc9ac96c/mall4j/A01\_updatepwd\_account\_takeover.py](https://github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf8043399fc9ac96c/mall4j/A01_updatepwd_account_takeover.py)
- [https://github.com/gz-yami/mall4j](https://github.com/gz-yami/mall4j)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)