{"id":"GO-2026-6090","revision":"fe741a53ee684c129f568840d34e374d","records":[{"revision":"fe741a53ee684c129f568840d34e374d","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6090","aliases":["BIT-golang-2026-56862","CVE-2026-56862"],"title":"Limit handshake messages we are willing to accept post-handshake in crypto/tls","description":"Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key derivation operations indefinitely.","state":0,"publishedAt":"2026-08-13T21:43:54+00:00","modifiedAt":"2026-10-20T10:42:24.5596723+00:00","affected":[{"ecosystem":"Go","name":"stdlib","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.25.13"},{"kind":"introduced","version":"1.26.0-0"},{"kind":"fixed","version":"1.26.6"},{"kind":"introduced","version":"1.27.0-0"},{"kind":"fixed","version":"1.27.0-rc.3"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://go.dev/issue/80528","https://go.dev/cl/804261","https://groups.google.com/g/golang-announce/c/94pEornpRlI"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6090","license":"OSV · upstream source license applies","key":"osv:GO-2026-6090","identifiers":["GO-2026-6090","BIT-golang-2026-56862","CVE-2026-56862"]},"retained":false,"historicalAffected":[]}],"coverage":[]}