CVE-2026-44459— Hono: Improper validation of NumericDate claims (exp, nbf, iat) in JWT verify()
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-44459
Vulnerability Information
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Vulnerability Title
Hono: Improper validation of NumericDate claims (exp, nbf, iat) in JWT verify()
Source: NVD (National Vulnerability Database)
Vulnerability 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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1284
Source: NVD (National Vulnerability Database)
Vulnerability Title
Hono 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hono是Hono社区的一个用 TypeScript 编写的 Web 框架。 Hono 4.12.18之前版本存在安全漏洞，该漏洞源于hono/utils/jwt中JWT NumericDate声明验证不当，可能导致不符合规范的声明值静默绕过基于时间的检查。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-44459
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- https://github.com/honojs/hono/security/advisories/GHSA-hm8q-7f3q-5f36x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-44459
Same Patch Batch · honojs · 2026-05-13 · 5 CVEs total
| CVE-2026-44456 | 6.5 MEDIUM | Hono: bodyLimit() can be bypassed for chunked / unknown-length requests |
| CVE-2026-44457 | 5.3 MEDIUM | Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user ca |
| CVE-2026-44455 | 4.7 MEDIUM | Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML Injection |
| CVE-2026-44458 | 4.3 MEDIUM | Hono: CSS Declaration Injection via Style Object Values in JSX SSR |
IV. Related Vulnerabilities
Same product: hono
- CVE-2026-44458
Hono: CSS Declaration Injection via Style Object Values in J - CVE-2026-44457
Hono: Cache Middleware ignores Vary: Authorization / Vary: C - CVE-2026-44456
Hono: bodyLimit() can be bypassed for chunked / unknown-leng - CVE-2026-44455
Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML I - CVE-2026-39410
Hono has a non-breaking space prefix bypass in cookie name h
Same vendor: honojs
- CVE-2026-44458
Hono: CSS Declaration Injection via Style Object Values in J - CVE-2026-44457
Hono: Cache Middleware ignores Vary: Authorization / Vary: C - CVE-2026-44456
Hono: bodyLimit() can be bypassed for chunked / unknown-leng - CVE-2026-44455
Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML I - CVE-2026-39410
Hono has a non-breaking space prefix bypass in cookie name h
Same weakness: CWE-1284
V. Comments for CVE-2026-44459
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