SUSE-SU-2026:4402-1

Update to 5.3.1.
CVE-2020-14343: A vulnerability was discovered in the PyYAML library, where it was susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.

References

Affected packages

SUSE:Linux Enterprise Module for Public Cloud 12

python3-PyYAML

Name: python3-PyYAML
Purl: pkg:rpm/suse/python3-PyYAML&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

5.3.1-32.1

{
    "binaries":  [
        {
            "python3-PyYAML":  "5.3.1-32.1"
        }
    ]
}

source

"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:4402-1.json"

SUSE:Linux Enterprise Server 12 SP5-LTSS

python3-PyYAML

Name: python3-PyYAML
Purl: pkg:rpm/suse/python3-PyYAML&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSS

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

5.3.1-32.1

{
    "binaries":  [
        {
            "python3-PyYAML":  "5.3.1-32.1"
        }
    ]
}

source

"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:4402-1.json"

SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5

python3-PyYAML

Name: python3-PyYAML
Purl: pkg:rpm/suse/python3-PyYAML&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

5.3.1-32.1

{
    "binaries":  [
        {
            "python3-PyYAML":  "5.3.1-32.1"
        }
    ]
}

source

"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:4402-1.json"