{"schema_version":"1.9.0","id":"GHSA-vgwf-h737-ff37","published":"2026-06-25T22:18:17Z","modified":"2026-08-31T15:45:51.336753830Z","aliases":["CVE-2026-39830","GO-2026-5017"],"related":["CGA-fjhq-h982-859w"],"summary":"golang.org/x/crypto: Invoking client can cause server deadlock on unexpected responses","details":"A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.","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"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-vgwf-h737-ff37/GHSA-vgwf-h737-ff37.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39830"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41066"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:42146"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:42796"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:43052"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:43692"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:46885"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:47735"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:48151"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:49944"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:51033"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:52857"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:52910"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:54400"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:54531"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:57194"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:57801"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:59467"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:60520"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:61314"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-39830"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2480684"},{"type":"PACKAGE","url":"https://cs.opensource.google/go/x/crypto"},{"type":"WEB","url":"https://go.dev/cl/781640"},{"type":"WEB","url":"https://go.dev/cl/781664"},{"type":"WEB","url":"https://go.dev/issue/79564"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/a082jnz-LvI"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-5017"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39830.json"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:29455"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:35833"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36199"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36207"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36319"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36625"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36648"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36651"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36796"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36797"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36808"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37072"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37268"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37271"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37272"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37275"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37278"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37286"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37296"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37387"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40118"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40262"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40945"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40969"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40972"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40974"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41019"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41031"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41036"}],"database_specific":{"cwe_ids":["CWE-119","CWE-772"],"github_reviewed":true,"github_reviewed_at":"2026-06-25T22:18:17Z","nvd_published_at":"2026-05-22T04:16:22Z","severity":"CRITICAL"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}