CVE-2026-39830criticalCWE-772

CVE-2026-39830: falha crítica em golang.org/x/crypto/ssh

Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh

Publicada em 22 mai 2026 · Atualizada em 18 set 2026

28Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 9.1epss 0.7%

probabilidade de exploração

0.7%top 48% das CVEs

exploração observada

nãonenhuma fonte reporta

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Produtos afetados

golang.org/x/crypto · golang.org/x/crypto/ssh

CVEs relacionadas — golang.org/x/crypto/ssh

No mesmo produto, das mais perigosas para as menos.

CVE-2024-45337CRITICALMisuse of connection.serverAuthenticate may cause authorization bypass in golang.org/x/cryptoEPSS 3.2%CVE-2025-22869HIGHPotential denial of service in golang.org/x/cryptoEPSS 0.9%CVE-2026-39834CRITICALInvoking infinite loop on large channel writes in golang.org/x/crypto/sshEPSS 0.6%CVE-2025-58181MEDIUMUnbounded memory consumption in golang.org/x/crypto/sshEPSS 0.6%CVE-2026-46595CRITICALInvoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/sshEPSS 0.6%CVE-2026-39835MEDIUMInvoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/sshEPSS 0.5%

Referências