🛡️ CVE-2025-51606
🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-798 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-798
Public Exploit ✅ No
Source NVD
Published 2025-08-21
Updated 2026-06-02
Modified 2025-08-22
Fix URL N/A

Affected Packages

Software From version Fixed in
cn.hippo4j:hippo4j-core 1.0.0
unknown

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