Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, improper validation of the JWT NumericDate claims exp, nbf, and iat in hono/utils/jwt allows tokens with non-spec-compliant claim values to silently bypass time-based checks. This issue is not exploitable by an anonymous attacker; it only manifests when a malformed claim value reaches verify() — typically when the application itself issues such tokens, or when the signing key is otherwise under attacker control. This vulnerability is fixed in 4.12.18.
Exploitability
AV:NAC:LPR:HUI:NScope
S:UImpact
C:LI:LA:N3.8/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:NOther