CVE-2026-44459

Published May 13, 2026

Last updated 13 days ago

Overview

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.
Source
security-advisories@github.com
NVD status
Analyzed
Products
hono

Risk scores

CVSS 3.1

Type
Secondary
Base score
3.8
Impact score
2.5
Exploitability score
1.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Severity
LOW

Weaknesses

security-advisories@github.com
CWE-1284

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.