UBUNTU-CVE-2026-86140

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Source

https://ubuntu.com/security/CVE-2026-86140

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86140.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-86140

Upstream

CVE-2026-86140

Published

2026-09-07T00:00:00Z

Modified

2026-09-07T14:08:46.652342946Z

Severity

8.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

(In libxml2 before 2.15.4, xmlSnprintfElements in valid.c has a strcat ...)

References

Affected packages

Ubuntu:22.04:LTS

libxml2

Package

Name: libxml2
Purl: pkg:deb/ubuntu/libxml2?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.12+dfsg-4

2.9.12+dfsg-5

2.9.12+dfsg-6

2.9.13+dfsg-1

2.9.13+dfsg-1build1

2.9.13+dfsg-1ubuntu0.1

2.9.13+dfsg-1ubuntu0.2

2.9.13+dfsg-1ubuntu0.3

2.9.13+dfsg-1ubuntu0.4

2.9.13+dfsg-1ubuntu0.5

2.9.13+dfsg-1ubuntu0.6

2.9.13+dfsg-1ubuntu0.7

2.9.13+dfsg-1ubuntu0.8

2.9.13+dfsg-1ubuntu0.9

2.9.13+dfsg-1ubuntu0.10

2.9.13+dfsg-1ubuntu0.11

2.9.13+dfsg-1ubuntu0.12

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.12",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.12",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.12",
            "binary_name": "python3-libxml2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86140.json"

Ubuntu:24.04:LTS

libxml2

Package

Name: libxml2
Purl: pkg:deb/ubuntu/libxml2?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.14+dfsg-1.3

2.9.14+dfsg-1.3build1

2.9.14+dfsg-1.3build2

2.9.14+dfsg-1.3build3

2.9.14+dfsg-1.3ubuntu1

2.9.14+dfsg-1.3ubuntu2

2.9.14+dfsg-1.3ubuntu3

2.9.14+dfsg-1.3ubuntu3.1

2.9.14+dfsg-1.3ubuntu3.2

2.9.14+dfsg-1.3ubuntu3.3

2.9.14+dfsg-1.3ubuntu3.4

2.9.14+dfsg-1.3ubuntu3.5

2.9.14+dfsg-1.3ubuntu3.6

2.9.14+dfsg-1.3ubuntu3.7

2.9.14+dfsg-1.3ubuntu3.8

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.8",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.8",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.8",
            "binary_name": "python3-libxml2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86140.json"

Ubuntu:26.04:LTS

libxml2

Package

Name: libxml2
Purl: pkg:deb/ubuntu/libxml2?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.14.5+dfsg-0.2

2.14.5+dfsg-0.2build1

2.15.1+dfsg-0.3

2.15.1+dfsg-0.4

2.15.1+dfsg-1

2.15.1+dfsg-2

2.15.1+dfsg-2ubuntu1

2.15.1+dfsg-2ubuntu2

2.15.2+dfsg-0.1

2.15.2+dfsg-0.1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.15.2+dfsg-0.1ubuntu0.1",
            "binary_name": "libxml2-16"
        },
        {
            "binary_version": "2.15.2+dfsg-0.1ubuntu0.1",
            "binary_name": "libxml2-source"
        },
        {
            "binary_version": "2.15.2+dfsg-0.1ubuntu0.1",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.15.2+dfsg-0.1ubuntu0.1",
            "binary_name": "python3-libxml2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86140.json"

Ubuntu:Pro:14.04:LTS

libxml2

Package

Name: libxml2
Purl: pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.1+dfsg1-3ubuntu2

2.9.1+dfsg1-3ubuntu3

2.9.1+dfsg1-3ubuntu4

2.9.1+dfsg1-3ubuntu4.1

2.9.1+dfsg1-3ubuntu4.2

2.9.1+dfsg1-3ubuntu4.3

2.9.1+dfsg1-3ubuntu4.4

2.9.1+dfsg1-3ubuntu4.5

2.9.1+dfsg1-3ubuntu4.6

2.9.1+dfsg1-3ubuntu4.7

2.9.1+dfsg1-3ubuntu4.8

2.9.1+dfsg1-3ubuntu4.9

2.9.1+dfsg1-3ubuntu4.10

2.9.1+dfsg1-3ubuntu4.11

2.9.1+dfsg1-3ubuntu4.12

2.9.1+dfsg1-3ubuntu4.13

2.9.1+dfsg1-3ubuntu4.13+esm1

2.9.1+dfsg1-3ubuntu4.13+esm2

2.9.1+dfsg1-3ubuntu4.13+esm3

2.9.1+dfsg1-3ubuntu4.13+esm4

2.9.1+dfsg1-3ubuntu4.13+esm5

2.9.1+dfsg1-3ubuntu4.13+esm6

2.9.1+dfsg1-3ubuntu4.13+esm7

2.9.1+dfsg1-3ubuntu4.13+esm8

2.9.1+dfsg1-3ubuntu4.13+esm9

2.9.1+dfsg1-3ubuntu4.13+esm10

2.9.1+dfsg1-3ubuntu4.13+esm11

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm11",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm11",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm11",
            "binary_name": "python-libxml2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86140.json"

Ubuntu:Pro:16.04:LTS

libxml2

Package

Name: libxml2
Purl: pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra%2Fxenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.2+zdfsg1-4

2.9.2+zdfsg1-4ubuntu1

2.9.2+zdfsg1-4ubuntu2

2.9.2+zdfsg1-4ubuntu3

2.9.3+dfsg1-1

2.9.3+dfsg1-1ubuntu0.1

2.9.3+dfsg1-1ubuntu0.2

2.9.3+dfsg1-1ubuntu0.3

2.9.3+dfsg1-1ubuntu0.4

2.9.3+dfsg1-1ubuntu0.5

2.9.3+dfsg1-1ubuntu0.6

2.9.3+dfsg1-1ubuntu0.7

2.9.3+dfsg1-1ubuntu0.7+esm1

2.9.3+dfsg1-1ubuntu0.7+esm2

2.9.3+dfsg1-1ubuntu0.7+esm3

2.9.3+dfsg1-1ubuntu0.7+esm4

2.9.3+dfsg1-1ubuntu0.7+esm5

2.9.3+dfsg1-1ubuntu0.7+esm6

2.9.3+dfsg1-1ubuntu0.7+esm7

2.9.3+dfsg1-1ubuntu0.7+esm8

2.9.3+dfsg1-1ubuntu0.7+esm9

2.9.3+dfsg1-1ubuntu0.7+esm10

2.9.3+dfsg1-1ubuntu0.7+esm11

2.9.3+dfsg1-1ubuntu0.7+esm12

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm12",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm12",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm12",
            "binary_name": "python-libxml2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86140.json"

Ubuntu:Pro:18.04:LTS

libxml2

Package

Name: libxml2
Purl: pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.4+dfsg1-4ubuntu1

2.9.4+dfsg1-5ubuntu1

2.9.4+dfsg1-5ubuntu2

2.9.4+dfsg1-5.1ubuntu1

2.9.4+dfsg1-5.2ubuntu1

2.9.4+dfsg1-6.1ubuntu1

2.9.4+dfsg1-6.1ubuntu1.2

2.9.4+dfsg1-6.1ubuntu1.3

2.9.4+dfsg1-6.1ubuntu1.4

2.9.4+dfsg1-6.1ubuntu1.5

2.9.4+dfsg1-6.1ubuntu1.6

2.9.4+dfsg1-6.1ubuntu1.7

2.9.4+dfsg1-6.1ubuntu1.8

2.9.4+dfsg1-6.1ubuntu1.9

2.9.4+dfsg1-6.1ubuntu1.9+esm1

2.9.4+dfsg1-6.1ubuntu1.9+esm2

2.9.4+dfsg1-6.1ubuntu1.9+esm3

2.9.4+dfsg1-6.1ubuntu1.9+esm4

2.9.4+dfsg1-6.1ubuntu1.9+esm5

2.9.4+dfsg1-6.1ubuntu1.9+esm6

2.9.4+dfsg1-6.1ubuntu1.9+esm7

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm7",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm7",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm7",
            "binary_name": "python-libxml2"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm7",
            "binary_name": "python3-libxml2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86140.json"

Ubuntu:Pro:20.04:LTS

libxml2

Package

Name: libxml2
Purl: pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.4+dfsg1-7ubuntu3

2.9.4+dfsg1-7ubuntu5

2.9.4+dfsg1-8ubuntu1

2.9.4+dfsg1-8ubuntu2

2.9.4+dfsg1-8ubuntu3

2.9.10+dfsg-1ubuntu3

2.9.10+dfsg-4build1

2.9.10+dfsg-5

2.9.10+dfsg-5ubuntu0.20.04.1

2.9.10+dfsg-5ubuntu0.20.04.2

2.9.10+dfsg-5ubuntu0.20.04.3

2.9.10+dfsg-5ubuntu0.20.04.4

2.9.10+dfsg-5ubuntu0.20.04.5

2.9.10+dfsg-5ubuntu0.20.04.6

2.9.10+dfsg-5ubuntu0.20.04.7

2.9.10+dfsg-5ubuntu0.20.04.8

2.9.10+dfsg-5ubuntu0.20.04.9

2.9.10+dfsg-5ubuntu0.20.04.10

2.9.10+dfsg-5ubuntu0.20.04.10+esm1

2.9.10+dfsg-5ubuntu0.20.04.10+esm2

2.9.10+dfsg-5ubuntu0.20.04.10+esm3

2.9.10+dfsg-5ubuntu0.20.04.10+esm4

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm4",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm4",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm4",
            "binary_name": "python-libxml2"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm4",
            "binary_name": "python3-libxml2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86140.json"