{"schema_version":"1.9.0","id":"BIT-golang-2026-42505","published":"2026-07-14T15:46:28.661Z","modified":"2026-09-08T08:47:50.176398700Z","aliases":["CVE-2026-42505","GO-2026-5856"],"summary":"Invoking Encrypted Client Hello privacy leak in crypto/tls","details":"Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello.","affected":[{"package":{"name":"golang","ecosystem":"Bitnami","purl":"pkg:bitnami/golang"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.25.12"},{"introduced":"1.26.0-0"},{"fixed":"1.26.5"},{"introduced":"1.27.0-0"},{"fixed":"1.27.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/golang/BIT-golang-2026-42505.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}],"references":[{"type":"FIX","url":"https://go.dev/cl/775960"},{"type":"FIX","url":"https://go.dev/issue/79282"},{"type":"ADVISORY","url":"https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42505"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-5856"}],"database_specific":{"cpes":["cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"],"severity":"Medium"}}