USN-8379-1

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Source
https://ubuntu.com/security/notices/USN-8379-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8379-1
Upstream
Related
Published
2026-06-03T13:50:43Z
Modified
2026-06-03T22:18:09.925568713Z
Summary
python-urllib3 vulnerabilities
Details

It was discovered that urllib3 incorrectly handled cross-origin redirects in ProxyManager. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2026-44431)

It was discovered that urllib3 incorrectly handled decompression of specially crafted responses. A remote attacker could possibly use this issue to cause urllib3 to consume resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-44432)

References

Affected packages

Ubuntu:22.04:LTS / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.26.5-1~exp1ubuntu0.7

Affected versions

1.*
1.26.5-1~exp1
1.26.5-1~exp1ubuntu0.1
1.26.5-1~exp1ubuntu0.2
1.26.5-1~exp1ubuntu0.3
1.26.5-1~exp1ubuntu0.4
1.26.5-1~exp1ubuntu0.5
1.26.5-1~exp1ubuntu0.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-urllib3",
            "binary_version": "1.26.5-1~exp1ubuntu0.7"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-44431",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json"

Ubuntu:24.04:LTS / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.7-1ubuntu0.7

Affected versions

1.*
1.26.16-1
1.26.18-1
2.*
2.0.7-1
2.0.7-1ubuntu0.1
2.0.7-1ubuntu0.2
2.0.7-1ubuntu0.3
2.0.7-1ubuntu0.4
2.0.7-1ubuntu0.5
2.0.7-1ubuntu0.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-urllib3",
            "binary_version": "2.0.7-1ubuntu0.7"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-44431",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json"

Ubuntu:25.10 / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.3.0-3ubuntu0.6

Affected versions

2.*
2.3.0-2
2.3.0-2ubuntu1
2.3.0-3
2.3.0-3ubuntu0.1
2.3.0-3ubuntu0.2
2.3.0-3ubuntu0.3
2.3.0-3ubuntu0.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-urllib3",
            "binary_version": "2.3.0-3ubuntu0.6"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-44431",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:25.10"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json"

Ubuntu:26.04:LTS / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.6.3-1ubuntu1.1

Affected versions

2.*
2.3.0-3
2.5.0-1
2.5.0-1ubuntu1
2.5.0-1ubuntu2
2.6.3-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-urllib3",
            "binary_version": "2.6.3-1ubuntu1.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-44431",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-44432",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json"