UBUNTU-CVE-2026-102938

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Source
https://ubuntu.com/security/CVE-2026-102938
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102938.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-102938
Upstream
Published
2026-09-29T21:17:00Z
Modified
2026-10-01T00:26:12Z
Severity
  • 5.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write() writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg._read_values() parses the file with str.splitlines() and accepts the last value for duplicate keys. An attacker who influences --prompt, VIRTUALENV_PROMPT, or configuration input can insert a recognized line boundary and additional keys, including home, causing consumers to use an attacker-selected base interpreter or corrupted environment metadata. The security impact requires prompt input from outside the operator's trust boundary; directly supplied prompt content primarily corrupts the operator's own environment. This issue is fixed in version 21.7.11.

References

Affected packages

Ubuntu:14.04:LTS
python-virtualenv

Package

Name
python-virtualenv
Purl
pkg:deb/ubuntu/python-virtualenv?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.10.1-1
1.11-1
1.11-2
1.11.4-1
1.11.4-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-virtualenv",
            "binary_version": "1.11.4-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102938.json"
Ubuntu:16.04:LTS
python-virtualenv

Package

Name
python-virtualenv
Purl
pkg:deb/ubuntu/python-virtualenv?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.11.6+ds-1
14.*
14.0.5+ds-1
14.0.5+ds-2
14.0.5+ds-4
15.*
15.0.0+ds-1
15.0.0+ds-2
15.0.1+ds-1
15.0.1+ds-2
15.0.1+ds-3
15.0.1+ds-3ubuntu1
15.0.1+ds-3ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-virtualenv",
            "binary_version": "15.0.1+ds-3ubuntu1.1"
        },
        {
            "binary_name": "python3-virtualenv",
            "binary_version": "15.0.1+ds-3ubuntu1.1"
        },
        {
            "binary_name": "virtualenv",
            "binary_version": "15.0.1+ds-3ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102938.json"
Ubuntu:18.04:LTS
python-virtualenv

Package

Name
python-virtualenv
Purl
pkg:deb/ubuntu/python-virtualenv?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

15.*
15.1.0+ds-1
15.1.0+ds-1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-virtualenv",
            "binary_version": "15.1.0+ds-1.1"
        },
        {
            "binary_name": "python3-virtualenv",
            "binary_version": "15.1.0+ds-1.1"
        },
        {
            "binary_name": "virtualenv",
            "binary_version": "15.1.0+ds-1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102938.json"
Ubuntu:26.04:LTS
python-virtualenv

Package

Name
python-virtualenv
Purl
pkg:deb/ubuntu/python-virtualenv?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.31.2+ds-1
20.35.3+ds-1
20.35.4+ds-1
20.36.1+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-virtualenv",
            "binary_version": "20.36.1+ds-1"
        },
        {
            "binary_name": "virtualenv",
            "binary_version": "20.36.1+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102938.json"
Ubuntu:Pro:20.04:LTS
python-virtualenv

Package

Name
python-virtualenv
Purl
pkg:deb/ubuntu/python-virtualenv?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

15.*
15.1.0+ds-2
15.1.0+ds-2build1
15.1.0+ds-2ubuntu1
20.*
20.0.13-1
20.0.17-1
20.0.17-1ubuntu0.3
20.0.17-1ubuntu0.4
20.0.17-1ubuntu0.4+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-virtualenv",
            "binary_version": "20.0.17-1ubuntu0.4+esm1"
        },
        {
            "binary_name": "virtualenv",
            "binary_version": "20.0.17-1ubuntu0.4+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102938.json"
Ubuntu:Pro:22.04:LTS
python-virtualenv

Package

Name
python-virtualenv
Purl
pkg:deb/ubuntu/python-virtualenv?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.4.6+ds-2
20.10.0+ds-1
20.12.1+ds-1
20.13.0+ds-1
20.13.0+ds-2
20.13.0+ds-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-virtualenv",
            "binary_version": "20.13.0+ds-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "virtualenv",
            "binary_version": "20.13.0+ds-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102938.json"
Ubuntu:Pro:24.04:LTS
python-virtualenv

Package

Name
python-virtualenv
Purl
pkg:deb/ubuntu/python-virtualenv?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.24.1+ds-1
20.24.6+ds-1
20.24.6+ds-2
20.25.0+ds-1
20.25.0+ds-2
20.25.0+ds-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-virtualenv",
            "binary_version": "20.25.0+ds-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "virtualenv",
            "binary_version": "20.25.0+ds-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102938.json"