SUSE-SU-2026:3792-1: important: Security update for rmt-server

[SLE-SECURITY-UPDATES]

# Security update for rmt-server

Announcement ID: SUSE-SU-2026:3792-1  
Release Date: 2026-08-25T12:31:31Z  
Rating: important  
References:

  * bsc#1265369
  * bsc#1274715

  
Cross-References:

  * CVE-2026-42256

  
CVSS scores:

  * CVE-2026-42256 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-42256 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-42256 ( NVD ):  6.0
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-42256 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

  
Affected Products:

  * Public Cloud Module 15-SP7
  * Server Applications Module 15-SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves one vulnerability and has one security fix can now be
installed.

## Description:

This update for rmt-server fixes the following issue:

Update to version 3.1 (bsc#1274715).

  * CVE-2026-42256: net-imap: hostile server can perform a DoS on client
    authenticating a connection with SCRAM-SHA1 or SCRAM-SHA2 (bsc#1265369).

Changes for rmt-server:

  * Version 3.1:
  * Remove all errors and warnings due to new Ruby and Ruby on Rails versions
  * Version 3.0:
  * Split Rails meta-gem into individual components for better security control
  * Version 3.0.alpha:
  * Update Ruby to version 3.4.8 and Rails to version 7.1.6

## 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:

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-3792=1

  * Public Cloud Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP7-2026-3792=1

## Package List:

  * Public Cloud Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * rmt-server-pubcloud-3.1.0-150700.3.28.1
    * rmt-server-debuginfo-3.1.0-150700.3.28.1
  * Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * rmt-server-debuginfo-3.1.0-150700.3.28.1
    * rmt-server-config-3.1.0-150700.3.28.1
    * rmt-server-3.1.0-150700.3.28.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-42256.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1265369
  * https://bugzilla.suse.com/show_bug.cgi?id=1274715

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