Riskcovery

CVE-2026-39835

Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh

State
Published
Severity
5.3 Medium
Published
May 22, 2026
Updated
Sep 18, 2026
Reserved
Apr 7, 2026

Read the record on cve.org

Description

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LCISA-ADP
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat-SADP

Weaknesses

Affected Products

ProductVersions
golang.org/x/crypto/sshgolang.org/x/crypto
  • before 0.52.0Affected

References

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