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CVE-2026-39410 Hono has a non-breaking space prefix bypass in cookie name handling in getCookie()

🗓️ 08 Apr 2026 14:44:40Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 18 Views

CVE-2026-39410: Hono cookie name bypass lets attacker cookies override cookies via non-breaking space prefix; fixed in 4.12.12.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins
Security Bulletin: Multiple Vulnerabilities in IBM Bob
26 May 202614:04
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ATTACKERKB
CVE-2026-39410
8 Apr 202614:44
attackerkb
Chainguard
CVE-2026-39410 vulnerabilities
9 Apr 202601:17
cgr
Circl
CVE-2026-39410
8 Apr 202618:17
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CNNVD
Hono 输入验证错误漏洞
8 Apr 202600:00
cnnvd
CVE
CVE-2026-39410
8 Apr 202614:44
cve
EUVD
EUVD-2026-20499
8 Apr 202600:17
euvd
Github Security Blog
Hono: Non-breaking space prefix bypass in cookie name handling in getCookie()
8 Apr 202600:17
github
NVD
CVE-2026-39410
8 Apr 202615:16
nvd
OSV
CGA-6RR8-4MQX-6M62
9 Apr 202600:45
osv
Rows per page
[
  {
    "vendor": "honojs",
    "product": "hono",
    "versions": [
      {
        "version": "< 4.12.12",
        "status": "affected"
      }
    ]
  }
]

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08 Apr 2026 14:44Current
CVSS 3.14.8
EPSS0.00284
18