GHSA-48cg-9c55-j2q7 · Severity: high · Ecosystem: maven — hippo4j Includes Hard Coded Secret Key in JWT Creation
hippo4j 1.0.0 to 1.5.0, uses a hard-coded secret key in its JWT (JSON Web Token) creation. This allows attackers with access to the source code or compiled binary to forge valid access tokens and impersonate any user, including privileged ones such as "admin". The vulnerability poses a critical security risk in systems where authentication and authorization rely on the integrity of JWTs.
Conclusion & alert: CVE-2025-51606 is rated Moderate Risk (43.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.33%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.33% | +0.27% |
| 2 | 2025-08-23 | 0.02% | 0.05% | +0.03% |
| 3 | 2025-08-22 | — | 0.02% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-48cg-9c55-j2q7 · Severity: high · Ecosystem: maven — hippo4j Includes Hard Coded Secret Key in JWT Creation
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||