USN-8133-1

It was discovered that PyJWT did not validate the critical header parameter, contrary to the RFC specification expectations. A remote attacker could possibly use this issue to bypass certain authentication checks and restrictions.

References

Affected packages

Ubuntu:22.04:LTS

pyjwt

Package

Name: pyjwt
Purl: pkg:deb/ubuntu/pyjwt@2.3.0-1ubuntu0.3?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.3.0-1ubuntu0.3

Affected versions

1.*

1.7.1-2ubuntu2

2.*

2.1.0-1

2.3.0-1

2.3.0-1ubuntu0.1

2.3.0-1ubuntu0.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.3.0-1ubuntu0.3",
            "binary_name": "python3-jwt"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8133-1.json"

cves_map

{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-32597",
            "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": "medium"
                }
            ]
        }
    ]
}

Ubuntu:24.04:LTS

pyjwt

Package

Name: pyjwt
Purl: pkg:deb/ubuntu/pyjwt@2.7.0-1ubuntu0.1?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.7.0-1ubuntu0.1

Affected versions

2.*

2.7.0-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.7.0-1ubuntu0.1",
            "binary_name": "python3-jwt"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8133-1.json"

cves_map

{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-32597",
            "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": "medium"
                }
            ]
        }
    ]
}

Ubuntu:25.10

pyjwt

Package

Name: pyjwt
Purl: pkg:deb/ubuntu/pyjwt@2.10.1-2ubuntu0.1?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.10.1-2ubuntu0.1

Affected versions

2.*

2.10.1-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.10.1-2ubuntu0.1",
            "binary_name": "python3-jwt"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8133-1.json"

cves_map

{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-32597",
            "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": "medium"
                }
            ]
        }
    ]
}

Ubuntu:Pro:16.04:LTS

pyjwt

Package

Name: pyjwt
Purl: pkg:deb/ubuntu/pyjwt@1.3.0-1ubuntu0.1+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.3.0-1ubuntu0.1+esm1

Affected versions

1.*

1.0.0-0ubuntu1

1.3.0-1

1.3.0-1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1.3.0-1ubuntu0.1+esm1",
            "binary_name": "python-jwt"
        },
        {
            "binary_version": "1.3.0-1ubuntu0.1+esm1",
            "binary_name": "python3-jwt"
        }
    ],
    "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-8133-1.json"

cves_map

{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-32597",
            "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": "medium"
                }
            ]
        }
    ]
}

Ubuntu:Pro:18.04:LTS

pyjwt

Package

Name: pyjwt
Purl: pkg:deb/ubuntu/pyjwt@1.5.3+ds1-1ubuntu0.1+esm1?arch=source&distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.5.3+ds1-1ubuntu0.1+esm1

Affected versions

1.*

1.4.2-1.1

1.5.3+ds1-1

1.5.3+ds1-1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1.5.3+ds1-1ubuntu0.1+esm1",
            "binary_name": "python-jwt"
        },
        {
            "binary_version": "1.5.3+ds1-1ubuntu0.1+esm1",
            "binary_name": "python3-jwt"
        }
    ],
    "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-8133-1.json"

cves_map

{
    "ecosystem": "Ubuntu:Pro:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-32597",
            "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": "medium"
                }
            ]
        }
    ]
}

Ubuntu:Pro:20.04:LTS

pyjwt

Package

Name: pyjwt
Purl: pkg:deb/ubuntu/pyjwt@1.7.1-2ubuntu2.1+esm1?arch=source&distro=esm-infra/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.7.1-2ubuntu2.1+esm1

Affected versions

1.*

1.7.0-2

1.7.1-1

1.7.1-2ubuntu1

1.7.1-2ubuntu2

1.7.1-2ubuntu2.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1.7.1-2ubuntu2.1+esm1",
            "binary_name": "python3-jwt"
        }
    ],
    "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-8133-1.json"

cves_map

{
    "ecosystem": "Ubuntu:Pro:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-32597",
            "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": "medium"
                }
            ]
        }
    ]
}