JWT Auth Middleware Vulnerability in Hono Web Application Framework
CVE-2025-62610

8.1HIGH

Key Information:

Vendor

Honojs

Status
Hono
Vendor
CVE Published:
22 October 2025

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.

Affected Version(s)

hono >= 1.1.0, < 4.10.2

References

https://github.com/honojs/hono/security/advisories/GHSA-m...
x_refsource_CONFIRM
https://github.com/honojs/hono/commit/45ba3bf9e3dff8e4bd8...
x_refsource_MISC

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-62610 : JWT Auth Middleware Vulnerability in Hono Web Application Framework