CVE-2025-51606HIGH 8.8EPSS p24.1%
CVE-2025-51606CVE-2025-51606
Description
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.
Scoring
| CVSS 3.1 | 8.8 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 0.33% probability of exploitation · percentile 24.1% · 2026-06-18T12:00:27Z |
| Published | 2025-08-21 |
| Last modified | 2026-04-15 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Use of Hard-coded Credentialscwe-798 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.