CVE-2026-56862 Affecting go-toolset:rhel8/golang-src package, versions <0:1.26.7-1.module_el8.10.0+4264+117c8fc2


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.57% (45th 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-ALMALINUX8-GOTOOLSET-19401856
  • published28 Aug 2026
  • disclosed3 Sept 2026

Introduced: 28 Aug 2026

NewCVE-2026-56862  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 go-toolset:rhel8/golang-src to version 0:1.26.7-1.module_el8.10.0+4264+117c8fc2 or higher.
This issue was patched in ALSA-2026:60305.

NVD Description

Note: Versions mentioned in the description apply only to the upstream go-toolset:rhel8/golang-src package and not the go-toolset:rhel8/golang-src package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key derivation operations indefinitely.

References

CVSS Base Scores

version 3.1