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CVE-2026-44452 h2o is vulnerable to heap overrun

🗓️ 16 Jul 2026 22:54:42Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 37 Views

H2O server heap overrun on zero-length SNI in ClientHello over TLS or QUIC that may crash; fixed by commit 8dc37cb.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-44452
16 Jul 202622:54
attackerkb
circl
Circl
CVE-2026-44452
17 Jul 202600:10
circl
cve
CVE
CVE-2026-44452
16 Jul 202622:54
cve
debiancve
Debian CVE
CVE-2026-44452
16 Jul 202622:54
debiancve
euvd
EUVD
EUVD-2026-45073
16 Jul 202622:54
euvd
freebsd
FreeBSD
h2o -- heap overrun parsing zero-length SNI
29 May 202600:00
freebsd
nessus
Tenable Nessus
FreeBSD : h2o -- heap overrun parsing zero-length SNI (fba766f4-ccda-4e1b-8875-ab857c6a6532)
12 Jun 202600:00
nessus
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-44452
18 Jul 202600:00
nessus
nvd
NVD
CVE-2026-44452
16 Jul 202623:16
nvd
osv
OSV
DEBIAN-CVE-2026-44452
16 Jul 202623:16
osv
Rows per page
[
  {
    "vendor": "h2o",
    "product": "h2o",
    "versions": [
      {
        "version": "< 8dc37cb",
        "status": "affected"
      }
    ]
  }
]

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