CVE-2021-45890
CRITICALCVSS 9.8/10EPSS 1.75%
Last modified
CVE-2021-45890 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.. EPSS estimates a 1.75% chance of exploitation in the next 30 days.
Description
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Authguard Project | Authguard | < 0.9.0 |
References
- https://github.com/AuthGuard/AuthGuard/commit/9783b1143da6576028de23e15a1f198b1f937b82Patch, Third Party Advisory
- https://github.com/AuthGuard/AuthGuard/compare/v0.8.0...v0.9.0Release Notes, Third Party Advisory
- https://github.com/AuthGuard/AuthGuard/issues/166Issue Tracking, Third Party Advisory
- https://github.com/AuthGuard/AuthGuard/pull/181Patch, Third Party Advisory
- https://github.com/AuthGuard/AuthGuard/commit/9783b1143da6576028de23e15a1f198b1f937b82Patch, Third Party Advisory
- https://github.com/AuthGuard/AuthGuard/compare/v0.8.0...v0.9.0Release Notes, Third Party Advisory
- https://github.com/AuthGuard/AuthGuard/issues/166Issue Tracking, Third Party Advisory
- https://github.com/AuthGuard/AuthGuard/pull/181Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-45890?
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.
How severe is CVE-2021-45890?
CVE-2021-45890 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.75% probability of exploitation in the next 30 days.
How do I fix CVE-2021-45890?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-45890?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST