Low [CVE-2026-56764] Hono - Timing Attack in basicAuth and bearerAuth Middleware
This low-severity Red Hat Linux advisory covers CVE-2026-56764 affecting Red Hat Hardened Images, Migration Toolkit for Applications 8.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
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.
A flaw was found in Hono. Red Hat severity: Low — CVSS 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
Weakness: CWE-208. Affected Red Hat products: Red Hat Hardened Images; Migration Toolkit for Applications 8.
Red Hat lists Red Hat Ansible Automation Platform 2; Red Hat Developer Hub 1; Red Hat Enterprise Linux 10; Red Hat OpenShift Dev Spaces as not affected. Red Hat fixing advisory: RHSA-2026:47618, RHSA-2026:47619.
Is CVE-2026-56764 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-56764 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-56764?
Upgrade to a fixed release named by Red Hat:
- grafana13-1-main-13.1.1-0.2.hum1
- grafana12-4-main-12.4.6-0.2.hum1
- RHSA-2026:47618
- RHSA-2026:47619
Confirm against the vendor advisory before you patch.
- < 4.11.10
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
- grafana13-1-main-13.1.1-0.2.hum1
- grafana12-4-main-12.4.6-0.2.hum1
- RHSA-2026:47618
- RHSA-2026:47619
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation
Upgrade to a fixed release: grafana13-1-main-13.1.1-0.2.hum1, grafana12-4-main-12.4.6-0.2.hum1, RHSA-2026:47618, RHSA-2026:47619. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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