CVE-2026-56854: falha de alta gravidade em golang.org/x/crypto/ssh
Source-address critical option not enforced for non-public-key auth callbacks in golang.org/x/crypto/ssh
Publicada em
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 0.4%
probabilidade de exploração
0.4%top 62% das CVEs
exploração observada
nãonenhuma fonte reporta
The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Produtos afetados
golang.org/x/crypto · golang.org/x/crypto/sshCVEs relacionadas — golang.org/x/crypto/ssh
No mesmo produto, das mais perigosas para as menos.
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