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CVE-2026-55213

🗓️ 10 Jul 2026 21:16:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 12 Views

H2O could crash on HTTP/3 QPACK due to 800 KB alloca on stack; fixed in commit edd7a120bfc4af11ac0cbebce2a43cc1f93f9af1.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-55213
10 Jul 202622:01
circl
cve
CVE
CVE-2026-55213
10 Jul 202620:49
cve
cvelist
Cvelist
CVE-2026-55213 h2o: musl libc stack overflow (QPACK)
10 Jul 202620:49
cvelist
debiancve
Debian CVE
CVE-2026-55213
10 Jul 202620:49
debiancve
euvd
EUVD
EUVD-2026-43036
10 Jul 202620:49
euvd
nvd
NVD
CVE-2026-55213
10 Jul 202621:16
nvd
osv
OSV
CVE-2026-55213 h2o: musl libc stack overflow (QPACK)
10 Jul 202620:49
osv
osv
OSV
DEBIAN-CVE-2026-55213
10 Jul 202621:16
osv
osv
OSV
UBUNTU-CVE-2026-55213
10 Jul 202621:16
osv
ptsecurity
Positive Technologies
PT-2026-57321
10 Jul 202600:00
ptsecurity
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu18.04allh2o0h2o_0_all.deb
Ubuntu20.04allh2o0h2o_0_all.deb
Ubuntu22.04allh2o0h2o_0_all.deb
Ubuntu24.04allh2o0h2o_0_all.deb
Ubuntu24.04alldnsdist0dnsdist_0_all.deb

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16 Jul 2026 10:55Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.17.5
EPSS0.00344
SSVC
12