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SUSE alert SUSE-SU-2026:22193-1 (mcphost)



From:
              SLE-SECURITY-UPDATES <null@suse.de>


To:
              sle-security-updates@lists.suse.com


Subject:
              SUSE-SU-2026:22193-1: important: Security update for mcphost


Date:
              Tue, 23 Jun 2026 16:37:19 -0000


Message-ID:
              <178223263998.221.15812734460211181460@f1988df5aa67>


# Security update for mcphost

Announcement ID: SUSE-SU-2026:22193-1  
Release Date: 2026-06-20T06:52:26Z  
Rating: important  
References:

  * bsc#1265730
  * bsc#1266145
  * bsc#1266572
  * bsc#1267109

  
Cross-References:

  * CVE-2026-25680
  * CVE-2026-25681
  * CVE-2026-27136
  * CVE-2026-33814
  * CVE-2026-39821
  * CVE-2026-39827
  * CVE-2026-39828
  * CVE-2026-39829
  * CVE-2026-39830
  * CVE-2026-39831
  * CVE-2026-39832
  * CVE-2026-39833
  * CVE-2026-39834
  * CVE-2026-39835
  * CVE-2026-42502
  * CVE-2026-42506
  * CVE-2026-42508
  * CVE-2026-46595
  * CVE-2026-46597
  * CVE-2026-46598

  
CVSS scores:

  * CVE-2026-25680 ( 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-2026-25680 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-25680 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-25681 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
  * CVE-2026-25681 ( SUSE ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-25681 ( NVD ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-27136 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
  * CVE-2026-27136 ( SUSE ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-27136 ( NVD ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-33814 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33814 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33814 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * 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-2026-39827 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-39827 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39827 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39828 ( SUSE ):  8.6
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-39828 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39828 ( NVD ):  6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-39829 ( 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-2026-39829 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39829 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39830 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-39830 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39830 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-39831 ( SUSE ):  8.6
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-39831 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39831 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39832 ( SUSE ):  6.2
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
  * CVE-2026-39832 ( SUSE ):  8.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
  * CVE-2026-39832 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39833 ( SUSE ):  8.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-39833 ( SUSE ):  7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39833 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39834 ( 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-2026-39834 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39834 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
  * CVE-2026-39835 ( 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-2026-39835 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39835 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-42502 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
  * CVE-2026-42502 ( SUSE ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-42502 ( NVD ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-42506 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
  * CVE-2026-42506 ( SUSE ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-42506 ( NVD ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-42508 ( SUSE ):  8.6
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-42508 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-42508 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-46595 ( SUSE ):  8.6
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-46595 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-46595 ( NVD ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
  * CVE-2026-46597 ( 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-2026-46597 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-46597 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-46598 ( 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-2026-46598 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-46598 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves 20 vulnerabilities can now be installed.

## Description:

This update for mcphost fixes the following issues

  * CVE-2026-25680,CVE-2026-25681,CVE-2026-27136,CVE-2026-42502,CVE-2026-42506:
    golang.org/x/net/html: multiple issues when parsing HTML files
    (bsc#1267109).
  * CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport
    when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265730).
  * CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only
    Punycode-encoded labels allows for validation bypass and privilege
    escalation (bsc#1266572).
  * CVE-2026-39827: Invoking memory leak when rejecting channels can lead to DoS
    in golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-39828: Invoking bypass of certificate restrictions in
    golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-39829: Invoking pathological RSA/DSA parameters may cause DoS in
    golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-39830: Invoking client can cause server deadlock on unexpected
    responses in golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-39831: Invoking bypass of FIDO/U2F security keys physical
    interaction in golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-39832: Invoking agent constraints dropped when forwarding keys in
    golang.org/x/crypto/ssh/agent (bsc#1266145).
  * CVE-2026-39833: Invoking key constraints not enforced in
    golang.org/x/crypto/ssh/agent (bsc#1266145).
  * CVE-2026-39834: Invoking infinite loop on large channel writes in
    golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-39835: Invoking server panic during CheckHostKey/Authenticate in
    golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-42508: Invoking auth bypass via unenforced @revoked status in
    golang.org/x/crypto/ssh/knownhosts (bsc#1266145).
  * CVE-2026-46595: Invoking VerifiedPublicKeyCallback permissions skip
    enforcement in golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-46597: Invoking byte arithmetic causes underflow and panic in
    golang.org/x/crypto/ssh (bsc#1266145).
  * CVE-2026-46598: Invoking pathological inputs can lead to client panic in
    golang.org/x/crypto/ssh/agent (bsc#1266145).

## 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 Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-985=1

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-985=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * mcphost-0.34.0-160000.2.1
    * mcphost-debuginfo-0.34.0-160000.2.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * mcphost-0.34.0-160000.2.1
    * mcphost-debuginfo-0.34.0-160000.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-25680.html
  * https://www.suse.com/security/cve/CVE-2026-25681.html
  * https://www.suse.com/security/cve/CVE-2026-27136.html
  * https://www.suse.com/security/cve/CVE-2026-33814.html
  * https://www.suse.com/security/cve/CVE-2026-39821.html
  * https://www.suse.com/security/cve/CVE-2026-39827.html
  * https://www.suse.com/security/cve/CVE-2026-39828.html
  * https://www.suse.com/security/cve/CVE-2026-39829.html
  * https://www.suse.com/security/cve/CVE-2026-39830.html
  * https://www.suse.com/security/cve/CVE-2026-39831.html
  * https://www.suse.com/security/cve/CVE-2026-39832.html
  * https://www.suse.com/security/cve/CVE-2026-39833.html
  * https://www.suse.com/security/cve/CVE-2026-39834.html
  * https://www.suse.com/security/cve/CVE-2026-39835.html
  * https://www.suse.com/security/cve/CVE-2026-42502.html
  * https://www.suse.com/security/cve/CVE-2026-42506.html
  * https://www.suse.com/security/cve/CVE-2026-42508.html
  * https://www.suse.com/security/cve/CVE-2026-46595.html
  * https://www.suse.com/security/cve/CVE-2026-46597.html
  * https://www.suse.com/security/cve/CVE-2026-46598.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1265730
  * https://bugzilla.suse.com/show_bug.cgi?id=1266145
  * https://bugzilla.suse.com/show_bug.cgi?id=1266572
  * https://bugzilla.suse.com/show_bug.cgi?id=1267109





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