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undici WebSocket client vulnerable to denial of service via fragment count bypass

🗓️ 19 Jun 2026 14:22:01Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 9 Views

Undici WebSocket client is vulnerable to memory exhaustion from unlimited fragment counts; upgrade to fixed versions.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2026-12151
17 Jun 202616:12
circl
CVE
CVE-2026-12151
17 Jun 202616:05
cve
Cvelist
CVE-2026-12151 undici WebSocket client vulnerable to denial of service via fragment count bypass
17 Jun 202616:05
cvelist
Debian CVE
CVE-2026-12151
17 Jun 202616:05
debiancve
EUVD
EUVD-2026-37747
19 Jun 202614:22
euvd
NVD
CVE-2026-12151
17 Jun 202617:16
nvd
OSV
CGA-25V4-996R-F3GH
20 Jun 202621:16
osv
OSV
DEBIAN-CVE-2026-12151
17 Jun 202617:16
osv
OSV
ECHO-F2CE-9C62-59CE
18 Jun 202613:18
osv
OSV
GHSA-VXPW-J846-P89Q undici WebSocket client vulnerable to denial of service via fragment count bypass
19 Jun 202614:22
osv
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Vulners
Node
nodejsundiciRange8.0.08.5.0npm
OR
nodejsundiciRange7.0.07.28.0npm
OR
nodejsundiciRange<6.27.0npm

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19 Jun 2026 14:23Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
EPSS0.00284
SSVC
9