CVE-2026-39828
Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh
6.3
MEDIUM
CVSS 3.1
EPSS 0.03%
Description
When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.
How to fix CVE-2026-39828
To remediate CVE-2026-39828, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 0.52.0 or later
Is CVE-2026-39828 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0
- from 0, < 0.52.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |