CVE-2021-45890
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive...
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.
- Record
CVE-2021-45890- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.
- Record
CVE-2021-45890- Updated
- 2026-11-02
EUVDEUVD-2021-32606 No score
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.
- Record
EUVD-2021-32606- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fmc3-vh2f-557h No score
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive...
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.
- Record
GHSA-fmc3-vh2f-557h- Weakness
- CWE-287
- Updated
- 2026-11-02
OSV
basic/BasicAuthProvider.java in AuthGuard before 0.9.0 allows authentication via an inactive identifier.
- Record
CVE-2021-45890- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-45890 is a critical vulnerability (CVSS 9.8) in Authguard Project Authguard, published December 27, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.80%, the 78th percentile. No source names a fixed version.