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ALPINE-CVE-2026-55199

🗓️ 17 Jun 2026 20:17:28Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 2 Views

Pre-authentication DoS in libssh2 up to 1.11.1 via crafted extension count causing CPU exhaustion during key exchange.

Related
Refs
ReporterTitlePublishedViews
Family
AlpineLinux
CVE-2026-55199
17 Jun 202618:44
alpinelinux
Circl
CVE-2026-55199
17 Jun 202622:46
circl
CVE
CVE-2026-55199
17 Jun 202618:44
cve
Cvelist
CVE-2026-55199 libssh2 - Pre-Authentication DoS via SSH_MSG_EXT_INFO Handler
17 Jun 202618:44
cvelist
Debian
[SECURITY] [DSA 6365-1] libssh2 security update
25 Jun 202618:20
debian
Debian CVE
CVE-2026-55199
17 Jun 202618:44
debiancve
EUVD
EUVD-2026-37782
17 Jun 202618:44
euvd
NCSC
The vulnerabilities in libssh2 are addressed through libssh.
24 Jun 202609:01
ncsc
NVD
CVE-2026-55199
17 Jun 202620:17
nvd
OPENSUSE Linux
libssh2-1-1.11.1-3.1 on GA media (moderate)
26 Jun 202600:00
opensuse
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23 Jun 2026 14:30Current
5.8Medium risk
Vulners AI Score5.8
CVSS 48.2
EPSS0.00371
2