USN-8154-1

Seokchan Yoon discovered that Django incorrectly handled copying memory when parsing multipart uploads with excessive whitespace. A remote attacker could possibly use this issue to cause Django to use excessive resources, leading to a denial of service. (CVE-2026-33033)

It was discovered that Django did not enforce an upload memory size limit in the Content-Length header. A remote attacker could possibly use this issue to cause Django to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-33034)

Tarek Nakkouch discovered that Django incorrectly handled underscores in the ASGI headers. A remote attacker could possibly use this issue to spoof HTTP headers. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 25.10. (CVE-2026-3902)

It was discovered that Django incorrectly handled verification of model data created with POST requests. A remote attacker could possibly use this issue to forge new model permissions. (CVE-2026-4277, CVE-2026-4292)

References

Affected packages

Ubuntu:Pro:18.04:LTS / python-django

Package

Name: python-django
Purl: pkg:deb/ubuntu/python-django@1:1.11.11-1ubuntu1.21+esm15?arch=source&distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:1.11.11-1ubuntu1.21+esm15

Affected versions

1:1.*

1:1.11.4-1ubuntu1

1:1.11.6-1ubuntu1

1:1.11.9-1ubuntu1

1:1.11.11-1ubuntu1

1:1.11.11-1ubuntu1.1

1:1.11.11-1ubuntu1.2

1:1.11.11-1ubuntu1.3

1:1.11.11-1ubuntu1.4

1:1.11.11-1ubuntu1.5

1:1.11.11-1ubuntu1.6

1:1.11.11-1ubuntu1.7

1:1.11.11-1ubuntu1.8

1:1.11.11-1ubuntu1.9

1:1.11.11-1ubuntu1.10

1:1.11.11-1ubuntu1.11

1:1.11.11-1ubuntu1.12

1:1.11.11-1ubuntu1.13

1:1.11.11-1ubuntu1.14

1:1.11.11-1ubuntu1.15

1:1.11.11-1ubuntu1.16

1:1.11.11-1ubuntu1.17

1:1.11.11-1ubuntu1.18

1:1.11.11-1ubuntu1.19

1:1.11.11-1ubuntu1.20

1:1.11.11-1ubuntu1.21

1:1.11.11-1ubuntu1.21+esm1

1:1.11.11-1ubuntu1.21+esm2

1:1.11.11-1ubuntu1.21+esm3

1:1.11.11-1ubuntu1.21+esm4

1:1.11.11-1ubuntu1.21+esm5

1:1.11.11-1ubuntu1.21+esm6

1:1.11.11-1ubuntu1.21+esm7

1:1.11.11-1ubuntu1.21+esm8

1:1.11.11-1ubuntu1.21+esm9

1:1.11.11-1ubuntu1.21+esm10

1:1.11.11-1ubuntu1.21+esm11

1:1.11.11-1ubuntu1.21+esm12

1:1.11.11-1ubuntu1.21+esm13

1:1.11.11-1ubuntu1.21+esm14

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:1.11.11-1ubuntu1.21+esm15",
            "binary_name": "python-django"
        },
        {
            "binary_version": "1:1.11.11-1ubuntu1.21+esm15",
            "binary_name": "python-django-common"
        },
        {
            "binary_version": "1:1.11.11-1ubuntu1.21+esm15",
            "binary_name": "python3-django"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8154-1.json"

cves_map

{
    "ecosystem": "Ubuntu:Pro:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-4277",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-4292",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-33033",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:Pro:20.04:LTS / python-django

Package

Name: python-django
Purl: pkg:deb/ubuntu/python-django@2:2.2.12-1ubuntu0.29+esm8?arch=source&distro=esm-infra/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:2.2.12-1ubuntu0.29+esm8

Affected versions

1:1.*

1:1.11.22-1ubuntu1

2:2.*

2:2.2.6-1ubuntu1

2:2.2.9-2ubuntu1

2:2.2.10-1

2:2.2.10-1ubuntu1

2:2.2.11-1

2:2.2.12-1

2:2.2.12-1ubuntu0.1

2:2.2.12-1ubuntu0.2

2:2.2.12-1ubuntu0.3

2:2.2.12-1ubuntu0.4

2:2.2.12-1ubuntu0.5

2:2.2.12-1ubuntu0.6

2:2.2.12-1ubuntu0.7

2:2.2.12-1ubuntu0.8

2:2.2.12-1ubuntu0.9

2:2.2.12-1ubuntu0.10

2:2.2.12-1ubuntu0.11

2:2.2.12-1ubuntu0.12

2:2.2.12-1ubuntu0.13

2:2.2.12-1ubuntu0.14

2:2.2.12-1ubuntu0.15

2:2.2.12-1ubuntu0.16

2:2.2.12-1ubuntu0.17

2:2.2.12-1ubuntu0.18

2:2.2.12-1ubuntu0.19

2:2.2.12-1ubuntu0.20

2:2.2.12-1ubuntu0.21

2:2.2.12-1ubuntu0.22

2:2.2.12-1ubuntu0.23

2:2.2.12-1ubuntu0.24

2:2.2.12-1ubuntu0.25

2:2.2.12-1ubuntu0.26

2:2.2.12-1ubuntu0.27

2:2.2.12-1ubuntu0.28

2:2.2.12-1ubuntu0.29

2:2.2.12-1ubuntu0.29+esm1

2:2.2.12-1ubuntu0.29+esm2

2:2.2.12-1ubuntu0.29+esm3

2:2.2.12-1ubuntu0.29+esm4

2:2.2.12-1ubuntu0.29+esm5

2:2.2.12-1ubuntu0.29+esm6

2:2.2.12-1ubuntu0.29+esm7

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2:2.2.12-1ubuntu0.29+esm8",
            "binary_name": "python3-django"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8154-1.json"

cves_map

{
    "ecosystem": "Ubuntu:Pro:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-4277",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-4292",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-33033",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:22.04:LTS / python-django

Package

Name: python-django
Purl: pkg:deb/ubuntu/python-django@2:3.2.12-2ubuntu1.26?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:3.2.12-2ubuntu1.26

Affected versions

2:2.*

2:2.2.24-1ubuntu1

2:3.*

2:3.2.12-2

2:3.2.12-2ubuntu1

2:3.2.12-2ubuntu1.1

2:3.2.12-2ubuntu1.2

2:3.2.12-2ubuntu1.3

2:3.2.12-2ubuntu1.4

2:3.2.12-2ubuntu1.5

2:3.2.12-2ubuntu1.6

2:3.2.12-2ubuntu1.7

2:3.2.12-2ubuntu1.8

2:3.2.12-2ubuntu1.9

2:3.2.12-2ubuntu1.10

2:3.2.12-2ubuntu1.11

2:3.2.12-2ubuntu1.12

2:3.2.12-2ubuntu1.13

2:3.2.12-2ubuntu1.14

2:3.2.12-2ubuntu1.15

2:3.2.12-2ubuntu1.16

2:3.2.12-2ubuntu1.17

2:3.2.12-2ubuntu1.18

2:3.2.12-2ubuntu1.19

2:3.2.12-2ubuntu1.20

2:3.2.12-2ubuntu1.21

2:3.2.12-2ubuntu1.22

2:3.2.12-2ubuntu1.23

2:3.2.12-2ubuntu1.24

2:3.2.12-2ubuntu1.25

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2:3.2.12-2ubuntu1.26",
            "binary_name": "python3-django"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8154-1.json"

cves_map

{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-3902",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-4277",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-4292",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-33033",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:24.04:LTS / python-django

Package

Name: python-django
Purl: pkg:deb/ubuntu/python-django@3:4.2.11-1ubuntu1.15?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

3:4.2.11-1ubuntu1.15

Affected versions

3:4.*

3:4.2.4-1ubuntu2

3:4.2.8-1

3:4.2.9-1

3:4.2.11-1

3:4.2.11-1ubuntu1

3:4.2.11-1ubuntu1.1

3:4.2.11-1ubuntu1.2

3:4.2.11-1ubuntu1.3

3:4.2.11-1ubuntu1.4

3:4.2.11-1ubuntu1.5

3:4.2.11-1ubuntu1.6

3:4.2.11-1ubuntu1.7

3:4.2.11-1ubuntu1.8

3:4.2.11-1ubuntu1.9

3:4.2.11-1ubuntu1.10

3:4.2.11-1ubuntu1.11

3:4.2.11-1ubuntu1.12

3:4.2.11-1ubuntu1.13

3:4.2.11-1ubuntu1.14

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "3:4.2.11-1ubuntu1.15",
            "binary_name": "python3-django"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8154-1.json"

cves_map

{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-3902",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-4277",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-4292",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-33033",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-33034",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        }
    ]
}

Ubuntu:25.10 / python-django

Package

Name: python-django
Purl: pkg:deb/ubuntu/python-django@3:5.2.4-1ubuntu2.4?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

3:5.2.4-1ubuntu2.4

Affected versions

3:4.*

3:4.2.18-1ubuntu1

3:4.2.18-1ubuntu1.1

3:5.*

3:5.2.4-1

3:5.2.4-1ubuntu1

3:5.2.4-1ubuntu2

3:5.2.4-1ubuntu2.1

3:5.2.4-1ubuntu2.2

3:5.2.4-1ubuntu2.3

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "3:5.2.4-1ubuntu2.4",
            "binary_name": "python3-django"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8154-1.json"

cves_map

{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-3902",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-4277",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-4292",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2026-33033",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-33034",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        }
    ]
}