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CVE-2026-109855

🗓️ 15 Oct 2026 00:00:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 2 Views

Unauthenticated DoS in undici experimental WebSocket client via failed HTTP/2 handshake.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-109855
15 Oct 202608:40
–circl
cve
CVE
CVE-2026-109855
15 Oct 202608:12
–cve
cvelist
Cvelist
CVE-2026-109855 undici WebSocket client vulnerable to Denial of Service via failed HTTP/2 handshake
15 Oct 202608:12
–cvelist
debiancve
Debian CVE
CVE-2026-109855
15 Oct 202608:12
–debiancve
euvd
EUVD
EUVD-2026-101959
15 Oct 202608:12
–euvd
nvd
NVD
CVE-2026-109855
15 Oct 202609:17
–nvd
ptsecurity
Positive Technologies
PT-2026-114837
15 Oct 202600:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2026-109855
15 Oct 202609:39
–redhatcve
redhat
RedHat Linux
Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
14 Oct 202622:13
–redhat
redhat
RedHat Linux
undici: undici: Denial of Service via failed HTTP/2 WebSocket handshake
14 Oct 202622:13
–redhat
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu24.04allnode-undici0node-undici_0_all.deb
Ubuntu26.04allnode-undici0node-undici_0_all.deb

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15 Oct 2026 19:56Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.17.5
EPSS0.00278
SSVC
2