USN-7844-1

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Source
https://ubuntu.com/security/notices/USN-7844-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7844-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7844-1
Upstream
Published
2025-10-28T19:20:39Z
Modified
2026-05-20T16:03:49.847248983Z
Summary
libyaml-syck-perl vulnerability
Details

It was discovered that YAML::Syck did not properly handle parsing YAML files. An attacker could possibly use this issue to expose sensitive information.

References

Affected packages

Ubuntu:25.10
libyaml-syck-perl

Package

Name
libyaml-syck-perl
Purl
pkg:deb/ubuntu/libyaml-syck-perl?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.34-3ubuntu0.1

Affected versions

1.*
1.34-2build4
1.34-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libyaml-syck-perl",
            "binary_version": "1.34-3ubuntu0.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7844-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2025-11683",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
Ubuntu:Pro:16.04:LTS
libyaml-syck-perl

Package

Name
libyaml-syck-perl
Purl
pkg:deb/ubuntu/libyaml-syck-perl?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.29-1ubuntu0.16.04.1~esm1

Affected versions

1.*
1.27-2build2
1.29-1
1.29-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libyaml-syck-perl",
            "binary_version": "1.29-1ubuntu0.16.04.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7844-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": []
}
Ubuntu:Pro:18.04:LTS
libyaml-syck-perl

Package

Name
libyaml-syck-perl
Purl
pkg:deb/ubuntu/libyaml-syck-perl?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.29-1ubuntu0.18.04.1~esm1

Affected versions

1.*
1.29-1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libyaml-syck-perl",
            "binary_version": "1.29-1ubuntu0.18.04.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7844-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:Pro:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-11683",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
Ubuntu:Pro:20.04:LTS
libyaml-syck-perl

Package

Name
libyaml-syck-perl
Purl
pkg:deb/ubuntu/libyaml-syck-perl?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.31-1ubuntu0.1~esm1

Affected versions

1.*
1.31-1
1.31-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libyaml-syck-perl",
            "binary_version": "1.31-1ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7844-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:Pro:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-11683",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
Ubuntu:Pro:22.04:LTS
libyaml-syck-perl

Package

Name
libyaml-syck-perl
Purl
pkg:deb/ubuntu/libyaml-syck-perl?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.34-1ubuntu0.1~esm1

Affected versions

1.*
1.34-1build1
1.34-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libyaml-syck-perl",
            "binary_version": "1.34-1ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7844-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:Pro:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-11683",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
Ubuntu:Pro:24.04:LTS
libyaml-syck-perl

Package

Name
libyaml-syck-perl
Purl
pkg:deb/ubuntu/libyaml-syck-perl?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.34-2ubuntu0.24.04.1~esm1

Affected versions

1.*
1.34-2
1.34-2build1
1.34-2build2
1.34-2build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libyaml-syck-perl",
            "binary_version": "1.34-2ubuntu0.24.04.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7844-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:Pro:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-11683",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}