low3.8
CVE-2026-44459
Hono is a Web application framework that provides support for any JavaScript runtime.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | hono | < 4.12.18 | 4.12.18 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Hono | Hono | before 4.12.18 |