What’s Vulnerable › Vulnerabilities

CVE-2021-45890

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-27 · updated 2026-06-17
• Weakness: CWE-287

Description

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

Affected products

• Authguard Project Authguard: before 0.9.0 — fixed in 0.9.0

How to fix

Upgrade to a fixed version: Authguard Project Authguard 0.9.0. Check the vendor advisory for mitigations.

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
• 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

Get alerted when CVE-2021-45890 or the next vulnerability affects your stack