CVE-2026-39828

MEDIUM 6.3

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

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

3th

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.

Vendor	golang.org/x/crypto
Product	golang.org/x/crypto/ssh
Published	May 22, 2026
Last Updated	May 22, 2026

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Affected Versions

golang.org/x/crypto / golang.org/x/crypto/ssh

0 < 0.52.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

go.dev: https://go.dev/issue/79562 groups.google.com: https://groups.google.com/g/golang-announce/c/a082jnz-LvI go.dev: https://go.dev/cl/781621 pkg.go.dev: https://pkg.go.dev/vuln/GO-2026-5014

Credits

NCC Group Cryptography Services, sponsored by Teleport