9.1
Critique
CVE-2026-39831 The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@openssh.com, sk-ssh-ed25519@openssh.com) did…
Description
The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@openssh.com, sk-ssh-ed25519@openssh.com) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing unattended use of a hardware security key. To restore the previous behavior, return a "no-touch-required" extension in Permissions.Extensions from PublicKeyCallback.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| golang.org/x/crypto/ssh 0.52 | premières → < 0.52.0 | 0.52.0 |
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9.1
Critique