CVE-2026-56764 | Hono before 4.11.10 contains a timing attack vulnerability i… | CVSS 3.7 LOW

Description

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.

Metadata

CVE ID: CVE-2026-56764
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-22 21:55 UTC
Published: 2026-07-15 11:25 UTC
Last updated: 2026-07-15 13:50 UTC
Primary CWE: CWE-208
Observable Timing Discrepancy
Vendor / Product: Hono / Hono
Sources: cve.org · NVD

Severity & Metrics

3.7 LOW CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
Hono	Hono	—	0 < 4.11.10, 4.11.10

Weakness (CWE)

CWE	Source	Description
CWE-208	cna	Observable Timing Discrepancy

CVSS scores (2)

Score	Severity	Version	Source	Vector
6.3	MEDIUM	4.0	cna	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
3.7	LOW	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

References (2)

GitHub Security Advisory (GHSA-gq3j-xvxp-8hrf) https://github.com/honojs/hono/security/advisories/GHSA-gq3j-xvxp-8hrf
VulnCheck Advisory: Hono - Timing Attack in basicAuth and bearerAuth Middleware https://www.vulncheck.com/advisories/hono-timing-attack-in-basicauth-and-bearerauth-middleware