CVE-2026-42504 Affecting golang package, versions <0:1.26.4-1.el9_8


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.56% (43rd percentile)

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  • Snyk IDSNYK-ALMALINUX9-GOLANG-21748639
  • published27 Oct 2026
  • disclosed8 Sept 2026

Introduced: 8 Sep 2026

CVE-2026-42504  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 golang to version 0:1.26.4-1.el9_8 or higher.
This issue was patched in ALSA-2026:29981.

NVD Description

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

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

CVSS Base Scores

version 3.1