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TI-2026-23230 Aliases CVE-2026-29086GHSA-5pq2-9x2x-5p6w

Hono: Cookie Attribute Injection via Unsanitized domain and path in setCookie()

Priority LOW 24CWE-1113Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, the setCookie() utility did not validate semicolons (;), carriage returns (\r), or newline characters (\n) in the domain and path options when constructing the Set-Cookie header. Because cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields. This issue has been patched in version 4.12.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00259 17th percentileScored 2026-11-07
Fix Fixed hono (honojs): 4.12.4hono (npm): 4.12.4

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 4.12.44.12.4Patch availableCNA
—hono (npm)before 4.12.44.12.4Patch availableGHSA-5pq2-9x2x-5p6w
  • hono Vendorhonojs Affected before 4.12.4 Fixed in 4.12.4 Patch available CNA
  • hono (npm) Vendor— Affected before 4.12.4 Fixed in 4.12.4 Patch available GHSA-5pq2-9x2x-5p6w

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*before 4.12.4Vulnerablehonojs
  • cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:* Versions before 4.12.4 Vulnerable ·honojs

Remediation

  • Fix · CNA hono (honojs) Fixed in 4.12.4
  • Fix · GHSA-5pq2-9x2x-5p6w hono (npm) Fixed in 4.12.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-29086
  2. 2026-10-03 Alias added: GHSA-5pq2-9x2x-5p6w

References

Patch 1

Advisory 2

Other 1

  • TI-2024-21741 Hono vulnerable to Restricted Directory Traversal in serveStatic with deno 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-2026-23190 Hono: Arbitrary file access via serveStatic vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-22076 Hono is Vulnerable to Authentication Bypass by IP Spoofing in AWS Lambda ALB conninfo CVSS 3.1HIGH 8.2
  • TI-2026-18334 JWT algorithm confusion in Hono JWK Auth Middleware when JWK lacks "alg" (untrusted header.alg fallback) CVSS 3.1HIGH 8.2
See all 33 →

Sources

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