JWT Auth Middleware Vulnerability in Hono Web Application Framework
CVE-2025-62610
What is CVE-2025-62610?
The Hono Web Application Framework has a critical issue in its JWT Auth Middleware, where the lack of aud (Audience) claim verification could allow an API to inadvertently accept valid tokens issued for different audiences. This gap in security can lead to unintended access across services that share the same issuer and keys. The framework’s documentation only lists verification options for iss/nbf/iat/exp claims, neglecting to implement the requisite aud checks as mandated by RFC 7519. A patch addressing this vulnerability was introduced in version 4.10.2.

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Affected Version(s)
hono >= 1.1.0, < 4.10.2
References
CVSS V3.1
Timeline
Vulnerability published
Vulnerability Reserved
