CVE-2026-56764 MEDIUM

CVE-2026-56764: Hono - Timing Attack in basicAuth and bearerAuth Middleware

Vendor Hono
Product Hono
Weakness CWE-208
Published July 15, 2026
Last update July 15, 2026

CVSS base score

6.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Hono before 4.11.10 contains a timing attack vulnerability in the basicAuth and bearerAuth middlewares due to non-constant-time string comparison in the timingSafeEqual function. Attackers can exploit early termination of string equality checks to infer valid credentials through precise timing measurements.

Key dates

02Disclosure timeline

July 15, 2026 CVE published