---
id: CVE-2026-92921
title: >-
  admin3 through 3.0.0 stores account passwords using single-round MD5 with only
  the username as salt and no key derivation function
summary: >-
  admin3 through 3.0.0 stores account passwords using single-round MD5 with only
  the username as salt and no key derivation function. Attackers with database
  access can recover plaintext passwords through offline dictionary or
  brute-force …
severity: medium
cvss: 4.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-916
vendor: cjbi
product: admin3
affected:
  - admin3 <= 3.0.0
published: '2026-09-17'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:53:07.383'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92921'
references:
  - url: >-
      https://github.com/LinYuanyi1/cve-request-poc/blob/master/admin3/C08_md5_credential_hashing.py
    label: disclosure@vulncheck.com
  - url: 'https://github.com/cjbi/admin3'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wetech/admin3/common/SecurityUtil.java
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wetech/admin3/sys/model/UserCredential.java
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/admin3-through-3.0.0-weak-password-hashing-via-single-round-md5
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00301
epssPercentile: 0.20413
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T19:40:06.366538Z'
ingestedAt: '2026-09-17T13:18:16.980Z'
---

## Overview

admin3 through 3.0.0 stores account passwords using single-round MD5 with only the username as salt and no key derivation function. Attackers with database access can recover plaintext passwords through offline dictionary or brute-force attacks due to negligible computational effort.

## Remediation

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