UBUNTU-CVE-2026-41205

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Source
https://ubuntu.com/security/CVE-2026-41205
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41205.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-41205
Upstream
  • CVE-2026-41205
Downstream
Related
Published
2026-04-24T00:00:00Z
Modified
2026-05-20T16:25:40.989592822Z
Severity
  • 7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.gettemplate() is vulnerable to path traversal when a URI starts with // (e.g., //../../../secret.txt). The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be returned as rendered template content when an application passes untrusted input directly to TemplateLookup.gettemplate(). This vulnerability is fixed in 1.3.11.

References

Affected packages

Ubuntu:22.04:LTS
mako

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.3+ds1-2ubuntu0.2

Affected versions

1.*
1.1.3+ds1-2
1.1.3+ds1-2ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.1.3+ds1-2ubuntu0.2",
            "binary_name": "python3-mako"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41205.json"
Ubuntu:24.04:LTS
mako

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.2-1ubuntu0.1

Affected versions

1.*
1.2.4+ds-2
1.3.1-1
1.3.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.2-1ubuntu0.1",
            "binary_name": "python3-mako"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41205.json"
Ubuntu:25.10
mako

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.9-1ubuntu0.1

Affected versions

1.*
1.3.8-2
1.3.9-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.9-1ubuntu0.1",
            "binary_name": "python3-mako"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41205.json"
Ubuntu:26.04:LTS
mako

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.10-3ubuntu0.1

Affected versions

1.*
1.3.9-1
1.3.10-3
1.3.10-3build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.10-3ubuntu0.1",
            "binary_name": "python3-mako"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41205.json"
Ubuntu:Pro:16.04:LTS
mako

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.3+ds1-1ubuntu1+esm2

Affected versions

1.*
1.0.2+ds1-1
1.0.3+ds1-1
1.0.3+ds1-1ubuntu1
1.0.3+ds1-1ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.0.3+ds1-1ubuntu1+esm2",
            "binary_name": "python-mako"
        },
        {
            "binary_version": "1.0.3+ds1-1ubuntu1+esm2",
            "binary_name": "python3-mako"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41205.json"
Ubuntu:Pro:18.04:LTS
mako

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.7+ds1-1ubuntu0.2+esm1

Affected versions

1.*
1.0.7+ds1-1
1.0.7+ds1-1ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.0.7+ds1-1ubuntu0.2+esm1",
            "binary_name": "python-mako"
        },
        {
            "binary_version": "1.0.7+ds1-1ubuntu0.2+esm1",
            "binary_name": "python3-mako"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41205.json"
Ubuntu:Pro:20.04:LTS
mako

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.0+ds1-1ubuntu2.1+esm1

Affected versions

1.*
1.0.7+ds1-1
1.1.0+ds1-1
1.1.0+ds1-1ubuntu1
1.1.0+ds1-1ubuntu2
1.1.0+ds1-1ubuntu2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.1.0+ds1-1ubuntu2.1+esm1",
            "binary_name": "python-mako"
        },
        {
            "binary_version": "1.1.0+ds1-1ubuntu2.1+esm1",
            "binary_name": "python3-mako"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41205.json"