CVE-2026-42505
Invoking Encrypted Client Hello privacy leak in crypto/tls
5.3
MEDIUM
CVSS 3.1
EPSS 0.41%
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.
How to fix CVE-2026-42505
To remediate CVE-2026-42505, upgrade the affected package to a fixed version below.
- Bitnami/golang—upgrade to 1.25.12 or later
- —upgrade to 1.25.12 or later
Is CVE-2026-42505 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.25.12, >= 1.26.0-0, < 1.26.5, >= 1.27.0-0, < 1.27.0
- from 0, < 1.25.12, >= 1.26.0-0, < 1.26.5, >= 1.27.0-0, < 1.27.0-rc.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |