CVE-2026-39828

high

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.

References

https://pkg.go.dev/vuln/GO-2026-5014

https://groups.google.com/g/golang-announce/c/a082jnz-LvI

https://go.dev/issue/79562

https://go.dev/cl/781621

Details

Source: Mitre, NVD

Published: 2026-05-22

Updated: 2026-05-22

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High