UBUNTU-CVE-2026-2705

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Source

https://ubuntu.com/security/CVE-2026-2705

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2705.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-2705

Upstream

CVE-2026-2705

Published

2026-02-19T07:17:00Z

Modified

2026-05-20T16:24:51.063006939Z

Severity

4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H CVSS Calculator
2.1 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A vulnerability was detected in Open Babel up to 3.1.1. The impacted element is the function OBAtom::SetFormalCharge in the library include/openbabel/atom.h of the component MOL2 File Handler. The manipulation results in out-of-bounds read. It is possible to launch the attack remotely. The exploit is now public and may be used. The patch is identified as e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. A patch should be applied to remediate this issue. The project was informed of the problem early through an issue report but has not responded yet.

References

Affected packages

Ubuntu:16.04:LTS

openbabel

Package

Name: openbabel
Purl: pkg:deb/ubuntu/openbabel?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.3.2+dfsg-2.2

2.3.2+dfsg-2.2build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libchemistry-openbabel-perl",
            "binary_version": "2.3.2+dfsg-2.2build1"
        },
        {
            "binary_name": "libopenbabel4v5",
            "binary_version": "2.3.2+dfsg-2.2build1"
        },
        {
            "binary_name": "openbabel",
            "binary_version": "2.3.2+dfsg-2.2build1"
        },
        {
            "binary_name": "openbabel-gui",
            "binary_version": "2.3.2+dfsg-2.2build1"
        },
        {
            "binary_name": "python-openbabel",
            "binary_version": "2.3.2+dfsg-2.2build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2705.json"

Ubuntu:18.04:LTS

openbabel

Package

Name: openbabel
Purl: pkg:deb/ubuntu/openbabel?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.3.2+dfsg-3build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libchemistry-openbabel-perl",
            "binary_version": "2.3.2+dfsg-3build1"
        },
        {
            "binary_name": "libopenbabel4v5",
            "binary_version": "2.3.2+dfsg-3build1"
        },
        {
            "binary_name": "openbabel",
            "binary_version": "2.3.2+dfsg-3build1"
        },
        {
            "binary_name": "openbabel-gui",
            "binary_version": "2.3.2+dfsg-3build1"
        },
        {
            "binary_name": "python-openbabel",
            "binary_version": "2.3.2+dfsg-3build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2705.json"

Ubuntu:20.04:LTS

openbabel

Package

Name: openbabel
Purl: pkg:deb/ubuntu/openbabel?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.4.1+dfsg-3

2.4.1+dfsg-3build1

2.4.1+dfsg-5.1

2.4.1+dfsg-6

3.*

3.0.0+dfsg-3

3.0.0+dfsg-3ubuntu3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libchemistry-openbabel-perl",
            "binary_version": "3.0.0+dfsg-3ubuntu3"
        },
        {
            "binary_name": "libopenbabel6",
            "binary_version": "3.0.0+dfsg-3ubuntu3"
        },
        {
            "binary_name": "openbabel",
            "binary_version": "3.0.0+dfsg-3ubuntu3"
        },
        {
            "binary_name": "openbabel-gui",
            "binary_version": "3.0.0+dfsg-3ubuntu3"
        },
        {
            "binary_name": "python3-openbabel",
            "binary_version": "3.0.0+dfsg-3ubuntu3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2705.json"

Ubuntu:22.04:LTS

openbabel

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.1+dfsg-6ubuntu1

3.1.1+dfsg-6ubuntu5

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libchemistry-openbabel-perl",
            "binary_version": "3.1.1+dfsg-6ubuntu5"
        },
        {
            "binary_name": "libopenbabel7",
            "binary_version": "3.1.1+dfsg-6ubuntu5"
        },
        {
            "binary_name": "openbabel",
            "binary_version": "3.1.1+dfsg-6ubuntu5"
        },
        {
            "binary_name": "openbabel-gui",
            "binary_version": "3.1.1+dfsg-6ubuntu5"
        },
        {
            "binary_name": "python3-openbabel",
            "binary_version": "3.1.1+dfsg-6ubuntu5"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2705.json"

Ubuntu:24.04:LTS

openbabel

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.1+dfsg-9build2

3.1.1+dfsg-9ubuntu1

3.1.1+dfsg-9ubuntu2

3.1.1+dfsg-9ubuntu4

3.1.1+dfsg-9ubuntu5

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libchemistry-openbabel-perl",
            "binary_version": "3.1.1+dfsg-9ubuntu5"
        },
        {
            "binary_name": "libopenbabel7",
            "binary_version": "3.1.1+dfsg-9ubuntu5"
        },
        {
            "binary_name": "openbabel",
            "binary_version": "3.1.1+dfsg-9ubuntu5"
        },
        {
            "binary_name": "openbabel-gui",
            "binary_version": "3.1.1+dfsg-9ubuntu5"
        },
        {
            "binary_name": "python3-openbabel",
            "binary_version": "3.1.1+dfsg-9ubuntu5"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2705.json"

Ubuntu:25.10

openbabel

Package

Name: openbabel
Purl: pkg:deb/ubuntu/openbabel?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.1+dfsg-11ubuntu3

3.1.1+dfsg-11ubuntu4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libchemistry-openbabel-perl",
            "binary_version": "3.1.1+dfsg-11ubuntu4"
        },
        {
            "binary_name": "libopenbabel7",
            "binary_version": "3.1.1+dfsg-11ubuntu4"
        },
        {
            "binary_name": "openbabel",
            "binary_version": "3.1.1+dfsg-11ubuntu4"
        },
        {
            "binary_name": "openbabel-gui",
            "binary_version": "3.1.1+dfsg-11ubuntu4"
        },
        {
            "binary_name": "python3-openbabel",
            "binary_version": "3.1.1+dfsg-11ubuntu4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2705.json"

Ubuntu:26.04:LTS

openbabel

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.1+dfsg-11ubuntu4

3.1.1+dfsg-11ubuntu5

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libchemistry-openbabel-perl",
            "binary_version": "3.1.1+dfsg-11ubuntu5"
        },
        {
            "binary_name": "libopenbabel7",
            "binary_version": "3.1.1+dfsg-11ubuntu5"
        },
        {
            "binary_name": "openbabel",
            "binary_version": "3.1.1+dfsg-11ubuntu5"
        },
        {
            "binary_name": "openbabel-gui",
            "binary_version": "3.1.1+dfsg-11ubuntu5"
        },
        {
            "binary_name": "python3-openbabel",
            "binary_version": "3.1.1+dfsg-11ubuntu5"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2705.json"