In short
- CVE-2025-51606 is a HIGH (CVSS 8.8) vulnerability affecting cn.hippo4j:hippo4j-core.
- Chance of exploitation in the next 30 days (EPSS): 0.35%, higher than 29.2% of all vulnerabilities.
- No patched version is listed yet: follow the vendor's advisory in References.
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.
NVD 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.
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