CVEvulnerability
CVE-2026-42505
5.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-08
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-201
Description
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 configurations
• golang go (>= 1.23.0 < 1.25.12)
• golang go (>= 1.26.0 < 1.26.5)
• golang go 1.27
Related
Weakness · CWE (1)
- CWE-201 Insertion of Sensitive Information Into Sent Data weakness
References
- 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