# CVE-2026-102361: mall4j authentication bypass in password reset endpoint

Source: https://junglewise.ai/threats/cve-2026-102361-mall4j-through-4-0-contains-a-missing-authentication  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-29. Updated: 2026-09-29  
License: CC BY 4.0 with a link back

CVE-2026-102361 · Severity: critical · CVSS 9.1 · Published 2026-09-29

mall4j is an e-commerce platform that enables online storefronts and shopping experiences. A missing authentication check in the password reset functionality allows attackers to reset any account password without authorization, leading to complete account takeover, access to customer orders, and exposure of personal information.

Technologies: [Gz-Yami Mall4j](https://junglewise.ai/threats/technologies/mall4j). Vendors: [Gz-Yami](https://junglewise.ai/threats/vendors/gz-yami).

## Quick answers

**Is CVE-2026-102361 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102361 being exploited in the wild.

**How severe is CVE-2026-102361?** Critical severity, with a CVSS score of 9.1, published 29 September 2026.

**Which products and versions are affected?** Gz-Yami Mall4j through 4.0.

**Is there a fix for CVE-2026-102361?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-102361 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-102361?** Check whether you run Gz-Yami Mall4j at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The PUT /user/updatePwd endpoint fails to validate user authentication or authorization before processing password change requests. An unauthenticated attacker can supply an arbitrary username in the request body to overwrite any account's password, bypassing all account ownership verification. This is a critical authentication bypass that provides direct account takeover with network-level attack vector.

## Affected products

- gz-yami mall4j through 4.0

## Timeline

- 2026-09-29: disclosed

## References

- [https://github.com/gz-yami/mall4j](https://github.com/gz-yami/mall4j)
- [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)

## Related threats

- [mall4j improper authorization in cart deletion](https://junglewise.ai/threats/cve-2026-108691-mall4j-through-4-0-contains-an-improper-authorization)
- [mall4j information disclosure via cart endpoint SQL injection](https://junglewise.ai/threats/cve-2026-108690-mall4j-through-4-0-contains-an-information-disclosure)
- [mall4j insufficient session expiration in token refresh](https://junglewise.ai/threats/cve-2026-102367-mall4j-through-4-0-contains-an-insufficient-session-expiration)
- [mall4j authorization bypass in UserAddrController endpoints](https://junglewise.ai/threats/cve-2026-102365-mall4j-through-4-0-fails-to-enforce-authorization-checks-on-get)
- [mall4j session privilege escalation via sysType field](https://junglewise.ai/threats/cve-2026-102364-mall4j-through-4-0-fails-to-validate-the-systype-field-in-sa)