SUSE-SU-2026:21139-1: important: Security update for python-cbor2

[SLE-UPDATES]

# Security update for python-cbor2

Announcement ID: SUSE-SU-2026:21139-1  
Release Date: 2026-04-07T11:57:38Z  
Rating: important  
References:

  * bsc#1255783
  * bsc#1260367

  
Cross-References:

  * CVE-2025-68131
  * CVE-2026-26209

  
CVSS scores:

  * CVE-2025-68131 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-68131 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  * CVE-2025-68131 ( NVD ):  5.5
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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-2025-68131 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-26209 ( 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-2026-26209 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-26209 ( NVD ):  7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

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

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for python-cbor2 fixes the following issues:

  * CVE-2025-68131: CBORDecoder reuse across trust boundaries can lead to leak
    of shareable values from previous decode calls via attacker-controlled
    messages (bsc#1255783).
  * CVE-2026-26209: uncontrolled recursion via crafted CBOR payloads can cause a
    denial of service (bsc#1260367).

## 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-16.0-482=1

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-482=1

## Package List:

  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * python313-cbor2-debuginfo-5.6.5-160000.4.1
    * python-cbor2-debugsource-5.6.5-160000.4.1
    * python313-cbor2-5.6.5-160000.4.1
  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * python313-cbor2-debuginfo-5.6.5-160000.4.1
    * python-cbor2-debugsource-5.6.5-160000.4.1
    * python313-cbor2-5.6.5-160000.4.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-68131.html
  * https://www.suse.com/security/cve/CVE-2026-26209.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1255783
  * https://bugzilla.suse.com/show_bug.cgi?id=1260367

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