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Improper Validation of Specified Quantity in Input

CVE-2026-44459

Low
3.8/10

Summary

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.

  • LOW
  • NETWORK
  • LOW
  • UNCHANGED
  • NONE
  • HIGH
  • LOW
  • NONE

CWE-1284 - Improper Validation of Specified Quantity in Input

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

References

Advisory Timeline

  • Published