SUSE-SU-2026:3416-1: important: Security update for prometheus-ha_cluster_exporter

[SLE-UPDATES]

# Security update for prometheus-ha_cluster_exporter

Announcement ID: SUSE-SU-2026:3416-1  
Release Date: 2026-07-30T07:04:47Z  
Rating: important  
References:

  * bsc#1266552

  
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:

  * SAP Applications Module 15-SP4
  * SUSE Linux Enterprise High Availability Extension 15 SP5
  * SUSE Linux Enterprise High Availability Extension 15 SP6
  * SUSE Linux Enterprise High Availability Extension 15 SP7
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for prometheus-ha_cluster_exporter 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#1266552).

Other updates and bugfixes:

  * Release 1.4.2:
  * Use proper obs time format on changes generation.
  * Upgrade x/net to 0.57.
  * Full changelog:
    https://github.com/ClusterLabs/ha_cluster_exporter/compare/1.4.1...1.4.2
  * Release 1.4.1:
  * Upgrade to use go 1.25
  * Bump github.com/prometheus/common from 0.59.1 to 0.61.0.
  * Bump golang.org/x/net from 0.33.0 to 0.55.0.
  * Full changelog:
    https://github.com/ClusterLabs/ha_cluster_exporter/compare/1.4.0...1.4.1

## 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:

  * SAP Applications Module 15-SP4  
    zypper in -t patch SUSE-SLE-Module-SAP-Applications-15-SP4-2026-3416=1

  * SUSE Linux Enterprise High Availability Extension 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP5-2026-3416=1

  * SUSE Linux Enterprise High Availability Extension 15 SP6  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP6-2026-3416=1

  * SUSE Linux Enterprise High Availability Extension 15 SP7  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP7-2026-3416=1

## Package List:

  * SUSE Linux Enterprise High Availability Extension 15 SP5 (aarch64 ppc64le
    s390x x86_64)
    * prometheus-ha_cluster_exporter-1.4.2-150200.3.32.1
  * SAP Applications Module 15-SP4 (aarch64 ppc64le s390x x86_64)
    * prometheus-ha_cluster_exporter-1.4.2-150200.3.32.1
  * SUSE Linux Enterprise High Availability Extension 15 SP6 (aarch64 ppc64le
    s390x x86_64)
    * prometheus-ha_cluster_exporter-1.4.2-150200.3.32.1
  * SUSE Linux Enterprise High Availability Extension 15 SP7 (aarch64 ppc64le
    s390x x86_64)
    * prometheus-ha_cluster_exporter-1.4.2-150200.3.32.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-39821.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1266552

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