CVE-2026-39831
golang.org/x/crypto golang.org/x/crypto/ssh, crypto 취약점
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.
- 대응 우선순위
- 점검
- CVSS
- 9.1
- EPSS
- 0.42% 백분위 34.6% · 2026.08.04 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.05.22