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.
https://pkg.go.dev/vuln/GO-2026-5856
https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc
https://go.dev/issue/79282
https://go.dev/cl/775960
Source: Mitre, NVD
Published: 2026-07-08
Updated: 2026-07-08
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 5.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N