USN-8022-1

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Source
https://ubuntu.com/security/notices/USN-8022-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8022-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8022-1
Upstream
Related
Published
2026-02-10T15:26:23Z
Modified
2026-02-12T07:13:56.833199Z
Summary
expat vulnerabilities
Details

It was discovered that Expat incorrectly handled memory when parsing certain XML files. An attacker could possibly use this issue to cause a denial of service. This issue was only addressed in Ubuntu 25.10. (CVE-2025-59375)

It was discovered that Expat incorrectly handled the initialization of parsers for external entities. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-24515)

It was discovered that Expat incorrectly handled integer calculations when allocating memory for XML tags. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-25210)

References

Affected packages

Ubuntu:22.04:LTS
expat

Package

Name
expat
Purl
pkg:deb/ubuntu/expat@2.4.7-1ubuntu0.7?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.7-1ubuntu0.7

Affected versions

2.*
2.4.1-2
2.4.1-3
2.4.2-1
2.4.3-1
2.4.3-2
2.4.4-1
2.4.6-1
2.4.7-1
2.4.7-1ubuntu0.1
2.4.7-1ubuntu0.2
2.4.7-1ubuntu0.3
2.4.7-1ubuntu0.4
2.4.7-1ubuntu0.5
2.4.7-1ubuntu0.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "expat",
            "binary_version": "2.4.7-1ubuntu0.7"
        },
        {
            "binary_name": "libexpat1",
            "binary_version": "2.4.7-1ubuntu0.7"
        },
        {
            "binary_name": "libexpat1-dev",
            "binary_version": "2.4.7-1ubuntu0.7"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-24515",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-25210",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8022-1.json"
Ubuntu:25.10
expat

Package

Name
expat
Purl
pkg:deb/ubuntu/expat@2.7.1-2ubuntu0.2?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.1-2ubuntu0.2

Affected versions

2.*
2.7.1-1
2.7.1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "expat",
            "binary_version": "2.7.1-2ubuntu0.2"
        },
        {
            "binary_name": "libexpat1",
            "binary_version": "2.7.1-2ubuntu0.2"
        },
        {
            "binary_name": "libexpat1-dev",
            "binary_version": "2.7.1-2ubuntu0.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2025-59375",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-24515",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-25210",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8022-1.json"
Ubuntu:Pro:14.04:LTS
expat

Package

Name
expat
Purl
pkg:deb/ubuntu/expat@2.1.0-4ubuntu1.4+esm11?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.1.0-4ubuntu1.4+esm11

Affected versions

2.*
2.1.0-4
2.1.0-4ubuntu1
2.1.0-4ubuntu1.1
2.1.0-4ubuntu1.2
2.1.0-4ubuntu1.3
2.1.0-4ubuntu1.4
2.1.0-4ubuntu1.4+esm1
2.1.0-4ubuntu1.4+esm2
2.1.0-4ubuntu1.4+esm4
2.1.0-4ubuntu1.4+esm6
2.1.0-4ubuntu1.4+esm7
2.1.0-4ubuntu1.4+esm8
2.1.0-4ubuntu1.4+esm9
2.1.0-4ubuntu1.4+esm10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "expat",
            "binary_version": "2.1.0-4ubuntu1.4+esm11"
        },
        {
            "binary_name": "lib64expat1",
            "binary_version": "2.1.0-4ubuntu1.4+esm11"
        },
        {
            "binary_name": "lib64expat1-dev",
            "binary_version": "2.1.0-4ubuntu1.4+esm11"
        },
        {
            "binary_name": "libexpat1",
            "binary_version": "2.1.0-4ubuntu1.4+esm11"
        },
        {
            "binary_name": "libexpat1-dev",
            "binary_version": "2.1.0-4ubuntu1.4+esm11"
        }
    ],
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:Pro:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-24515",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-25210",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8022-1.json"
Ubuntu:Pro:16.04:LTS
expat

Package

Name
expat
Purl
pkg:deb/ubuntu/expat@2.1.0-7ubuntu0.16.04.5+esm11?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.1.0-7ubuntu0.16.04.5+esm11

Affected versions

2.*
2.1.0-7
2.1.0-7ubuntu0.16.04.1
2.1.0-7ubuntu0.16.04.2
2.1.0-7ubuntu0.16.04.3
2.1.0-7ubuntu0.16.04.4
2.1.0-7ubuntu0.16.04.5
2.1.0-7ubuntu0.16.04.5+esm2
2.1.0-7ubuntu0.16.04.5+esm5
2.1.0-7ubuntu0.16.04.5+esm6
2.1.0-7ubuntu0.16.04.5+esm7
2.1.0-7ubuntu0.16.04.5+esm8
2.1.0-7ubuntu0.16.04.5+esm9
2.1.0-7ubuntu0.16.04.5+esm10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "expat",
            "binary_version": "2.1.0-7ubuntu0.16.04.5+esm11"
        },
        {
            "binary_name": "lib64expat1",
            "binary_version": "2.1.0-7ubuntu0.16.04.5+esm11"
        },
        {
            "binary_name": "lib64expat1-dev",
            "binary_version": "2.1.0-7ubuntu0.16.04.5+esm11"
        },
        {
            "binary_name": "libexpat1",
            "binary_version": "2.1.0-7ubuntu0.16.04.5+esm11"
        },
        {
            "binary_name": "libexpat1-dev",
            "binary_version": "2.1.0-7ubuntu0.16.04.5+esm11"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-24515",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-25210",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8022-1.json"
Ubuntu:Pro:18.04:LTS
expat

Package

Name
expat
Purl
pkg:deb/ubuntu/expat@2.2.5-3ubuntu0.9+esm3?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.2.5-3ubuntu0.9+esm3

Affected versions

2.*
2.2.3-1
2.2.3-2
2.2.5-0ubuntu2
2.2.5-3
2.2.5-3ubuntu0.1
2.2.5-3ubuntu0.2
2.2.5-3ubuntu0.4
2.2.5-3ubuntu0.7
2.2.5-3ubuntu0.8
2.2.5-3ubuntu0.9
2.2.5-3ubuntu0.9+esm1
2.2.5-3ubuntu0.9+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "expat",
            "binary_version": "2.2.5-3ubuntu0.9+esm3"
        },
        {
            "binary_name": "libexpat1",
            "binary_version": "2.2.5-3ubuntu0.9+esm3"
        },
        {
            "binary_name": "libexpat1-dev",
            "binary_version": "2.2.5-3ubuntu0.9+esm3"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:Pro:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-24515",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-25210",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8022-1.json"
Ubuntu:Pro:20.04:LTS
expat

Package

Name
expat
Purl
pkg:deb/ubuntu/expat@2.2.9-1ubuntu0.8+esm1?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.2.9-1ubuntu0.8+esm1

Affected versions

2.*
2.2.7-2
2.2.9-1
2.2.9-1build1
2.2.9-1ubuntu0.2
2.2.9-1ubuntu0.4
2.2.9-1ubuntu0.5
2.2.9-1ubuntu0.6
2.2.9-1ubuntu0.7
2.2.9-1ubuntu0.8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "expat",
            "binary_version": "2.2.9-1ubuntu0.8+esm1"
        },
        {
            "binary_name": "libexpat1",
            "binary_version": "2.2.9-1ubuntu0.8+esm1"
        },
        {
            "binary_name": "libexpat1-dev",
            "binary_version": "2.2.9-1ubuntu0.8+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:Pro:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-24515",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-25210",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8022-1.json"