UBUNTU-CVE-2026-59927

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Source
https://ubuntu.com/security/CVE-2026-59927
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59927.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-59927
Upstream
Published
2026-07-08T17:17:00Z
Modified
2026-07-15T19:47:06.603994550Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, allowing two markdown files that include each other to trigger unbounded recursion, raise RecursionError, and crash the rendering request. This issue is fixed in version 3.3.0.

References

Affected packages

Ubuntu:16.04:LTS
mistune

Package

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

Affected ranges

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

Affected versions

0.*
0.6-2
0.7.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-mistune",
            "binary_version": "0.7.1-1"
        },
        {
            "binary_name": "python3-mistune",
            "binary_version": "0.7.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59927.json"
Ubuntu:18.04:LTS
mistune

Package

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

Affected ranges

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

Affected versions

0.*
0.7.4-1
0.8-1
0.8.1-1
0.8.3-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-mistune",
            "binary_version": "0.8.3-2"
        },
        {
            "binary_name": "python3-mistune",
            "binary_version": "0.8.3-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59927.json"
Ubuntu:20.04:LTS
mistune

Package

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

Affected ranges

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

Affected versions

0.*
0.8.4-1
0.8.4-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-mistune",
            "binary_version": "0.8.4-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59927.json"
Ubuntu:22.04:LTS
mistune

Package

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

Affected ranges

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

Affected versions

0.*
0.8.4-4
0.8.4-5
2.*
2.0.0-1+really0.8.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-mistune",
            "binary_version": "2.0.0-1+really0.8.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59927.json"
Ubuntu:24.04:LTS
mistune

Package

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

Affected ranges

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

Affected versions

2.*
2.0.4-2
3.*
3.0.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-mistune",
            "binary_version": "3.0.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59927.json"
Ubuntu:25.10
mistune

Package

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

Affected ranges

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

Affected versions

3.*
3.0.2-2
3.1.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-mistune",
            "binary_version": "3.1.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59927.json"
Ubuntu:26.04:LTS
mistune

Package

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

Affected ranges

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

Affected versions

3.*
3.1.3-1
3.1.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-mistune",
            "binary_version": "3.1.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59927.json"