CVE-2026-39835
Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
22 May 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
golang.org/x/crypto · golang.org/x/crypto/sshWant to know if your infrastructure is exposed to this?
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