CVE-2026-44459
Description
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.
How to fix
- hono hono4.12.18 or later
- hono4.12.18 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hono hono | v < 4.12.18 | 4.12.18 |
| hononpm | v < 4.12.18 | 4.12.18 |
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Attack Surface Management
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