USN-8198-1

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Source
https://ubuntu.com/security/notices/USN-8198-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8198-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8198-1
Published
2026-04-22T17:52:30Z
Modified
2026-04-24T10:13:17.780514Z
Summary
python-tornado vulnerabilities
Details

It was discovered that Tornado incorrectly handled parsing of large multipart request bodies. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-31958)

It was discovered that Tornado did not properly validate characters in cookie values. An attacker could possibly use this issue to inject arbitrary cookie attributes. (CVE-2026-35536)

References

Affected packages

Ubuntu:24.04:LTS
python-tornado

Package

Name
python-tornado
Purl
pkg:deb/ubuntu/python-tornado@6.4.0-1ubuntu0.5?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.4.0-1ubuntu0.5

Affected versions

6.*
6.3.2-1
6.4.0-0ubuntu1
6.4.0-1
6.4.0-1build1
6.4.0-1ubuntu0.1
6.4.0-1ubuntu0.2
6.4.0-1ubuntu0.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-tornado",
            "binary_version": "6.4.0-1ubuntu0.5"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8198-1.json"
Ubuntu:25.10
python-tornado

Package

Name
python-tornado
Purl
pkg:deb/ubuntu/python-tornado@6.4.2-3ubuntu0.3?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.4.2-3ubuntu0.3

Affected versions

6.*
6.4.2-1
6.4.2-2
6.4.2-2ubuntu1
6.4.2-3
6.4.2-3ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-tornado",
            "binary_version": "6.4.2-3ubuntu0.3"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:25.10"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8198-1.json"
Ubuntu:Pro:16.04:LTS
python-tornado

Package

Name
python-tornado
Purl
pkg:deb/ubuntu/python-tornado@4.2.1-1ubuntu3.1+esm3?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.2.1-1ubuntu3.1+esm3

Affected versions

4.*
4.2.1-1ubuntu2
4.2.1-1ubuntu3
4.2.1-1ubuntu3.1
4.2.1-1ubuntu3.1+esm1
4.2.1-1ubuntu3.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-tornado",
            "binary_version": "4.2.1-1ubuntu3.1+esm3"
        },
        {
            "binary_name": "python3-tornado",
            "binary_version": "4.2.1-1ubuntu3.1+esm3"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8198-1.json"
Ubuntu:Pro:18.04:LTS
python-tornado

Package

Name
python-tornado
Purl
pkg:deb/ubuntu/python-tornado@4.5.3-1ubuntu0.2+esm3?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.5.3-1ubuntu0.2+esm3

Affected versions

4.*
4.5.1-2.1~build2
4.5.2-1
4.5.3-1
4.5.3-1ubuntu0.1
4.5.3-1ubuntu0.2
4.5.3-1ubuntu0.2+esm1
4.5.3-1ubuntu0.2+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-tornado",
            "binary_version": "4.5.3-1ubuntu0.2+esm3"
        },
        {
            "binary_name": "python3-tornado",
            "binary_version": "4.5.3-1ubuntu0.2+esm3"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8198-1.json"
Ubuntu:Pro:20.04:LTS
python-tornado

Package

Name
python-tornado
Purl
pkg:deb/ubuntu/python-tornado@6.0.3+really5.1.1-3ubuntu0.1~esm5?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.0.3+really5.1.1-3ubuntu0.1~esm5

Affected versions

5.*
5.1.1-4ubuntu1
5.1.1-4ubuntu5
6.*
6.0.3+really5.1.1-2
6.0.3+really5.1.1-2build1
6.0.3+really5.1.1-2build2
6.0.3+really5.1.1-3
6.0.3+really5.1.1-3ubuntu0.1~esm1
6.0.3+really5.1.1-3ubuntu0.1~esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-tornado",
            "binary_version": "6.0.3+really5.1.1-3ubuntu0.1~esm5"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8198-1.json"
Ubuntu:Pro:22.04:LTS
python-tornado

Package

Name
python-tornado
Purl
pkg:deb/ubuntu/python-tornado@6.1.0-3ubuntu0.1~esm5?arch=source&distro=esm-apps/jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.0-3ubuntu0.1~esm5

Affected versions

6.*
6.1.0-1build1
6.1.0-2
6.1.0-3
6.1.0-3build1
6.1.0-3ubuntu0.1~esm1
6.1.0-3ubuntu0.1~esm2
6.1.0-3ubuntu0.1~esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-tornado",
            "binary_version": "6.1.0-3ubuntu0.1~esm5"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:Pro:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8198-1.json"