| Summary | 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. |
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| Publication Date | May 22, 2026, 1:16 p.m. |
| Registration Date | May 23, 2026, 4:08 a.m. |
| Last Update | May 22, 2026, 1:16 p.m. |