CVE-2026-42505

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://go.dev/cl/775960	Patch
https://go.dev/issue/79282	Issue Tracking Patch
https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc	Mailing List Release Notes Vendor Advisory
https://pkg.go.dev/vuln/GO-2026-5856	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go:1.27:rc1::::::

History

No history.

Information

Published : 2026-07-08 17:17

Updated : 2026-09-16 20:14

NVD link : CVE-2026-42505

Mitre link : CVE-2026-42505

CVE.ORG link : CVE-2026-42505

JSON object : View

Products Affected

golang

go

CWE

CWE-201

Insertion of Sensitive Information Into Sent Data

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