SUSE-SU-2026:22432-1: important: Security update for helm

[SLE-UPDATES]

# Security update for helm

Announcement ID: SUSE-SU-2026:22432-1  
Release Date: 2026-06-29T10:32:23Z  
Rating: important  
References:

  * bsc#1266598

  
Cross-References:

  * CVE-2026-39821

  
CVSS scores:

  * CVE-2026-39821 ( SUSE ):  9.1
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-39821 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39821 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
  * CVE-2026-39821 ( NVD ):  8.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

  
Affected Products:

  * SUSE Linux Micro 6.0

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for helm fixes the following issue

  * CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only
    Punycode-encoded labels allows for validation bypass and privilege
    escalation (bsc#1266598).

Changes for helm:

  * update to 3.21.2:
  * chore(deps): bump the k8s-io group with 2 updates 1259634 (dependabot[bot])
  * fixes b52e276 (Matheus Pimenta)
  * chore(deps): bump the k8s-io group across 1 directory with 2 updates 3342dbf
    (dependabot[bot])
  * Update to version 3.21.1:
  * Fixed nil pointer panic that could happen with helm template in ClientOnly
    flows. Now correctly returns a template error #31920
  * Bumped golang.org/x/net to v0.55.0 to address GO-2026-5026 #32152
  * Bumped Go from 1.25 to 1.26 #32168
  * Dependency version updates
  * chore(deps): bump oras.land/oras-go/v2 from 2.6.0 to 2.6.1
  * chore(deps): bump golang.org/x/crypto from 0.52.0 to 0.53.0
  * chore(deps): bump golang.org/x/term from 0.43.0 to 0.44.0
  * chore(deps): bump golang.org/x/text from 0.37.0 to 0.38.0
  * chore(deps): bump github.com/lib/pq from 1.11.2 to 1.12.3
  * chore(deps): bump github.com/distribution/distribution/v3
  * chore(deps): bump github.com/containerd/containerd from 1.7.30 to 1.7.32
  * chore(deps): bump github.com/Masterminds/semver/v3 from 3.4.0 to 3.5.0
  * chore(deps): bump github.com/mattn/go-shellwords from 1.0.12 to 1.0.13
  * chore(deps): bump golang.org/x/crypto from 0.51.0 to 0.52.0
  * chore(deps): bump k8s.io/klog/v2 from 2.130.1 to 2.140.0
  * chore(deps): bump golang.org/x/text from 0.35.0 to 0.37.0
  * update golang/x/net to v0.55.0 (bsc#1266598, CVE-2026-39821)

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Micro 6.0  
    zypper in -t patch SUSE-SLE-Micro-6.0-773=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * helm-debuginfo-3.21.2-1.1
    * helm-3.21.2-1.1
  * SUSE Linux Micro 6.0 (noarch)
    * helm-bash-completion-3.21.2-1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-39821.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1266598

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