CVE-2026-44459

LOW
INFO Priority: 0.01 BB Relevance: 53/100
Published: 2026-05-13 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: None
S: Unchanged
C: Low
I: Low
A: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
hono hono < 4.12.18

Bug Bounty Relevance

53 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

3.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.22%
Raw Score 0.002160
Percentile 12.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00216
2026-10-28
0.00216

Intelligence Sources

nvd ref →