{"id":"GO-2026-5014","summary":"Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh","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.","aliases":["CVE-2026-39828"],"modified":"2026-05-22T02:30:18.875852932Z","published":"2026-05-22T02:08:34Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-5014","review_status":"REVIEWED"},"references":[{"type":"REPORT","url":"https://go.dev/issue/79562"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/a082jnz-LvI"},{"type":"FIX","url":"https://go.dev/cl/781621"}],"affected":[{"package":{"name":"golang.org/x/crypto","ecosystem":"Go","purl":"pkg:golang/golang.org/x/crypto"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.52.0"}]}],"ecosystem_specific":{"imports":[{"path":"golang.org/x/crypto/ssh","symbols":["NewServerConn","connection.serverAuthenticate"]}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-5014.json"}}],"schema_version":"1.7.5","credits":[{"name":"NCC Group Cryptography Services, sponsored by Teleport"}]}