UBUNTU-CVE-2026-48526

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Source
https://ubuntu.com/security/CVE-2026-48526
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48526.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-48526
Upstream
  • CVE-2026-48526
Published
2026-05-28T16:16:00Z
Modified
2026-06-03T11:26:16Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.

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
0Unknown 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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.3.0-1ubuntu0.3",
            "binary_name": "python3-jwt"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48526.json"
Ubuntu:24.04:LTS
pyjwt

Package

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

Affected ranges

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

Affected versions

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

Ecosystem specific 

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

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48526.json"
Ubuntu:25.10
pyjwt

Package

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

Affected ranges

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

Affected versions

2.*
2.10.1-2
2.10.1-2ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.10.1-2ubuntu0.1",
            "binary_name": "python3-jwt"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48526.json"
Ubuntu:26.04:LTS
pyjwt

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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

Ecosystem specific 

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

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48526.json"
Ubuntu:Pro:16.04:LTS
pyjwt

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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

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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48526.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
0Unknown 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

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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48526.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
0Unknown 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

Ecosystem specific 

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

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48526.json"