CVE-2026-39828

MEDIUM6.3

Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh

Published May 22, 2026

Modified 1 weeks ago

Details

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

WEB

https://go.dev/cl/781621

WEB

https://go.dev/issue/79562

WEB

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

WEB

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

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-39828

CVSS Analysis