CVE-2026-42505 Affecting golang-misc package, versions <0:1.26.5-1.el9_8


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.38% (31st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ALMALINUX9-GOLANGMISC-18591529
  • published8 Aug 2026
  • disclosed9 Jul 2026

Introduced: 9 Jul 2026

CVE-2026-42505  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 golang-misc to version 0:1.26.5-1.el9_8 or higher.
This issue was patched in ALSA-2026:37435.

NVD Description

Note: Versions mentioned in the description apply only to the upstream golang-misc package and not the golang-misc package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

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 Base Scores

version 3.1