Vulnerability DatabaseCVE-2026-39835
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CVE-2026-39835
Published:May 22, 2026
Updated:May 29, 2026
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.
Affected Packages
https://github.com/golang/crypto.git (GITHUB):
Affected version(s) >=v0.1.0 <v0.52.0
Fix Suggestion:
Update to version v0.52.0
golang.org/x/crypto (GO):
Affected version(s) >=v0.0.0-20120125194513-f61fbb80d2fc <v0.52.0
Fix Suggestion:
Update to version v0.52.0
Related Resources (4)
https://go.dev/issue/79563
https://pkg.go.dev/vuln/GO-2026-5015
https://groups.google.com/g/golang-announce/c/a082jnz-LvI
https://go.dev/cl/781660
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Improper Certificate Validation
CWE-295
EPSS
Base Score:
0.03