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TI-2026-40928 Aliases CVE-2026-56764GHSA-98q5-3v5r-qvfh

Hono - Timing Attack in basicAuth and bearerAuth Middleware

Priority LOW 28CWE-208Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Partial Red Hat: 1 fixed, 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-208.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00297 22nd percentileScored 2026-11-07
Fix Partial Hono (Hono): 4.11.10Red Hat: 2 advisoriesRed Hat: 1 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
honojsHonobefore 4.11.104.11.10Patch availableCNA
  • Hono Vendorhonojs Affected before 4.11.10 Fixed in 4.11.10 Patch available CNA

Remediation

  • Fix · CNA Hono (Hono) Fixed in 4.11.10

Red Hat 2 advisories

  • RHSA-2026:47619 Released 2026-07-28 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana12.4-12.4.6-0.2.hum1@aarch64, grafana12.4-12.4.6-0.2.hum1@src, grafana12.4-12.4.6-0.2.hum1@x86_64
  • RHSA-2026:47618 Released 2026-07-28 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana13.1-13.1.1-0.2.hum1@aarch64, grafana13.1-13.1.1-0.2.hum1@src, grafana13.1-13.1.1-0.2.hum1@x86_64

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Migration Toolkit for Applications 8AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:47618, RHSA-2026:47619
Not affected: 4 products
  • Red Hat Ansible Automation Platform 2
  • Red Hat Developer Hub 1
  • Red Hat Enterprise Linux 10
  • Red Hat OpenShift Dev Spaces

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56764
  2. 2026-10-03 Alias added: GHSA-98q5-3v5r-qvfh
  3. 2026-10-27 Affected versions changed · Red Hat

References

Advisory 1

  • TI-2024-21741 Hono vulnerable to Restricted Directory Traversal in serveStatic with deno CVSS 3.1MEDIUM 5.3
  • TI-2024-15441 @hono/node-server can't handle "double dots" in URL CVSS 3.1MEDIUM 5.3
  • TI-2024-32610 Hono vulnerable to bypass of CSRF Middleware by a request without Content-Type header. CVSS 3.1MEDIUM 5.9
  • TI-2024-29381 Hono CSRF middleware can be bypassed using crafted Content-Type header CVSS 3.1MEDIUM 5.0
  • TI-2026-39189 Hono: Lambda@Edge adapter keeps only the last value of a repeated request header, dropping the rest CVSS 3.1MEDIUM 4.8
  • TI-2026-23190 Hono: Arbitrary file access via serveStatic vulnerability CVSS 3.1CRITICAL 9.8
See all 59 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences