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CVE-2026-92921— admin3 through 3.0.0 Weak Password Hashing via Single-Round MD5

Quick assessment

Affected
cjbi admin3
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

原文翻译： Admin3 在 3.0.0 之前的版本中，使用单轮 MD5 算法存储账户密码，仅以用户名作为盐值，且未使用密钥派生函数。由于计算开销极小，能够访问数据库的攻击者可以通过离线字典攻击或暴力破解，轻松还原出明文密码。

CVSS 4.9 · Medium
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I. Basic Information for CVE-2026-92921

Vulnerability Information
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Vulnerability Title
admin3 through 3.0.0 Weak Password Hashing via Single-Round MD5
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用具有不充分计算复杂性的口令哈希
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cjbi admin3 0 ~ 3.0.0 -

II. Public POCs for CVE-2026-92921

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III. Intelligence Information for CVE-2026-92921

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Vendor Advisories for CVE-2026-92921 (1)

Proof of Concept for CVE-2026-92921 (1)

Vendor Pages for CVE-2026-92921 (1)

Other References for CVE-2026-92921 (2)

Same Patch Batch · cjbi · 2026-09-17 · 4 CVEs total

CVE-2026-92918 8.8 HIGH admin3 through 3.0.0 Session Token Disclosure via Audit Log
CVE-2026-92919 8.1 HIGH admin3 through 3.0.0 Arbitrary File Write via Path Traversal in Storage Upload Filename
CVE-2026-92920 5.4 MEDIUM admin3 through 3.0.0 Session Not Invalidated When a User Account Is Disabled

IV. Related Vulnerabilities

Same product: admin3
Same vendor: cjbi
Same weakness: CWE-916

V. Comments for CVE-2026-92921

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