{"cve":"CVE-2026-44459","nvd":{"published":"2026-05-13T16:16:57.970","modified":"2026-10-26T14:10:00.130","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","score":3.8},"cwes":["CWE-1284"],"references":["https://github.com/honojs/hono/security/advisories/GHSA-hm8q-7f3q-5f36"],"products":["hono:hono"],"source":"nvd","synced_at":"2026-10-26T14:27:29.784594657+00:00"},"epss":{"cve":"CVE-2026-44459","score":0.00216,"percentile":0.11922,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-hm8q-7f3q-5f36","url":"https://osv.dev/vulnerability/GHSA-hm8q-7f3q-5f36","summary":"Hono has improper validation of NumericDate claims (exp, nbf, iat) in JWT verify()","modified":"2026-09-10T03:51:05.786966268Z","packages":[{"ecosystem":"npm","name":"hono","purl":"pkg:npm/hono","ranges":["<4.12.18"],"fixed":["4.12.18"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}