What is CVE-2026-44459?

CVE-2026-44459 is a low-severity vulnerability in Hono, classified under Improper Validation of Specified Quantity in Input. CVSS score: 3.8/10. Published 2026-05-13.

How severe is CVE-2026-44459?

Low severity. CVSS v3 base score is 3.8 out of 10.

Vulnerability in Hono

CVE-2026-44459

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 value…

EPSS: 0.000 (6.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N.

Affected products

Hono
Honojs Hono — versions < 4.12.18

Weakness classification (CWE)

CWE-1284 — Improper Validation of Specified Quantity in Input

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-44459?: CVE-2026-44459 is a low-severity vulnerability in Hono, classified under Improper Validation of Specified Quantity in Input. CVSS score: 3.8/10. Published 2026-05-13.
How severe is CVE-2026-44459?: Low severity. CVSS v3 base score is 3.8 out of 10.