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.
Project Subscriptions
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Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-hm8q-7f3q-5f36 | Hono has improper validation of NumericDate claims (exp, nbf, iat) in JWT verify() |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 13 May 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Hono: Improper validation of NumericDate claims (exp, nbf, iat) in JWT verify() | |
| Weaknesses | CWE-1284 | |
| References |
| |
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-13T15:02:23.872Z
Reserved: 2026-05-06T15:49:25.193Z
Link: CVE-2026-44459
No data.
Status : Awaiting Analysis
Published: 2026-05-13T16:16:57.970
Modified: 2026-05-13T16:59:34.390
Link: CVE-2026-44459
No data.
OpenCVE Enrichment
No data.
Weaknesses
Github GHSA