UBUNTU-CVE-2026-102269

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Source
https://ubuntu.com/security/CVE-2026-102269
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102269.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-102269
Upstream
Published
2026-09-28T21:17:00Z
Modified
2026-09-30T21:41:54Z
Severity
  • 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT signature segment is affected because signature segment decoding accepts characters outside the canonical Base64URL representation. This occurs when non-Base64URL characters are appended to a valid compact JWS signature segment. As a result, base64url_decode produces the same signature bytes for different serialized segments. Consequently, raw-token revocation checks can fail to recognize an equivalent modified token. This issue is fixed in version 2.14.0.

References

Affected packages

Ubuntu:22.04:LTS
pyjwt

Package

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

Affected ranges

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

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
2.3.0-1ubuntu0.3
2.3.0-1ubuntu0.4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-jwt",
            "binary_version":  "2.3.0-1ubuntu0.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102269.json"
Ubuntu:24.04:LTS
pyjwt

Package

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

Affected ranges

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

Affected versions

2.*
2.7.0-1
2.7.0-1ubuntu0.1
2.7.0-1ubuntu0.2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-jwt",
            "binary_version":  "2.7.0-1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102269.json"
Ubuntu:26.04:LTS
pyjwt

Package

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

Affected ranges

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

Affected versions

2.*
2.10.1-2
2.10.1-3
2.10.1-3build1
2.10.1-4
2.10.1-4ubuntu1
2.10.1-4ubuntu1.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-jwt",
            "binary_version":  "2.10.1-4ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102269.json"
Ubuntu:Pro:16.04:LTS
pyjwt

Package

Name
pyjwt
Purl
pkg:deb/ubuntu/pyjwt?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

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

Affected versions

1.*
1.0.0-0ubuntu1
1.3.0-1
1.3.0-1ubuntu0.1
1.3.0-1ubuntu0.1+esm1
1.3.0-1ubuntu0.1+esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-jwt",
            "binary_version":  "1.3.0-1ubuntu0.1+esm2"
        },
        {
            "binary_name":  "python3-jwt",
            "binary_version":  "1.3.0-1ubuntu0.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102269.json"
Ubuntu:Pro:18.04:LTS
pyjwt

Package

Name
pyjwt
Purl
pkg:deb/ubuntu/pyjwt?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

1.*
1.4.2-1.1
1.5.3+ds1-1
1.5.3+ds1-1ubuntu0.1
1.5.3+ds1-1ubuntu0.1+esm1
1.5.3+ds1-1ubuntu0.1+esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-jwt",
            "binary_version":  "1.5.3+ds1-1ubuntu0.1+esm2"
        },
        {
            "binary_name":  "python3-jwt",
            "binary_version":  "1.5.3+ds1-1ubuntu0.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102269.json"
Ubuntu:Pro:20.04:LTS
pyjwt

Package

Name
pyjwt
Purl
pkg:deb/ubuntu/pyjwt?arch=source&distro=esm-infra%2Ffocal

Affected ranges

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

Affected versions

1.*
1.7.0-2
1.7.1-1
1.7.1-2ubuntu1
1.7.1-2ubuntu2
1.7.1-2ubuntu2.1
1.7.1-2ubuntu2.1+esm1
1.7.1-2ubuntu2.1+esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-jwt",
            "binary_version":  "1.7.1-2ubuntu2.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102269.json"