UBUNTU-CVE-2026-3408

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-3408
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3408.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-3408
Upstream
Published
2026-03-02T04:16:00Z
Modified
2026-04-27T18:57:00.812820Z
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
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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 identified in Open Babel up to 3.1.1. This impacts the function OBAtom::GetExplicitValence of the file isrc/atom.cpp of the component CDXML File Handler. Such manipulation leads to null pointer dereference. The attack can be launched remotely. The exploit is publicly available and might be used. The name of the patch is e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. It is best practice to apply a patch to resolve this issue.

References

Affected packages

Ubuntu:16.04:LTS
openbabel

Package

Name
openbabel
Purl
pkg:deb/ubuntu/openbabel@2.3.2+dfsg-2.2build1?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-2026-3408.json"
Ubuntu:18.04:LTS
openbabel

Package

Name
openbabel
Purl
pkg:deb/ubuntu/openbabel@2.3.2+dfsg-3build1?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-2026-3408.json"
Ubuntu:20.04:LTS
openbabel

Package

Name
openbabel
Purl
pkg:deb/ubuntu/openbabel@3.0.0+dfsg-3ubuntu3?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-2026-3408.json"
Ubuntu:22.04:LTS
openbabel

Package

Name
openbabel
Purl
pkg:deb/ubuntu/openbabel@3.1.1+dfsg-6ubuntu5?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-2026-3408.json"
Ubuntu:24.04:LTS
openbabel

Package

Name
openbabel
Purl
pkg:deb/ubuntu/openbabel@3.1.1+dfsg-9ubuntu5?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-2026-3408.json"
Ubuntu:25.10
openbabel

Package

Name
openbabel
Purl
pkg:deb/ubuntu/openbabel@3.1.1+dfsg-11ubuntu4?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-2026-3408.json"
Ubuntu:26.04
openbabel

Package

Name
openbabel
Purl
pkg:deb/ubuntu/openbabel@3.1.1+dfsg-11ubuntu5?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-2026-3408.json"