UBUNTU-CVE-2026-34531

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Source
https://ubuntu.com/security/CVE-2026-34531
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34531.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-34531
Upstream
  • CVE-2026-34531
Published
2026-04-01T21:17:00Z
Modified
2026-05-20T16:25:34.123435008Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Flask-HTTPAuth provides Basic, Digest and Token HTTP authentication for Flask routes. Prior to version 4.8.1, in a situation where the client makes a request to a token protected resource without passing a token, or passing an empty token, Flask-HTTPAuth would invoke the application's token verification callback function with the token argument set to an empty string. If the application had any users in its database with an empty string set as their token, then it could potentially authenticate the client request against any of those users. This issue has been patched in version 4.8.1.

References

Affected packages

Ubuntu:16.04:LTS
python-flask-httpauth

Package

Name
python-flask-httpauth
Purl
pkg:deb/ubuntu/python-flask-httpauth?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.2.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-flask-httpauth",
            "binary_version": "2.2.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34531.json"
Ubuntu:18.04:LTS
python-flask-httpauth

Package

Name
python-flask-httpauth
Purl
pkg:deb/ubuntu/python-flask-httpauth?arch=source&distro=bionic

Affected ranges

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

Affected versions

3.*
3.2.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-flask-httpauth",
            "binary_version": "3.2.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34531.json"
Ubuntu:20.04:LTS
python-flask-httpauth

Package

Name
python-flask-httpauth
Purl
pkg:deb/ubuntu/python-flask-httpauth?arch=source&distro=focal

Affected ranges

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

Affected versions

3.*
3.2.4-3
3.2.4-3.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-flask-httpauth",
            "binary_version": "3.2.4-3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34531.json"
Ubuntu:22.04:LTS
python-flask-httpauth

Package

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

Affected ranges

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

Affected versions

3.*
3.2.4-3.1
4.*
4.5.0-1
4.5.0-2
4.5.0-3
4.5.0-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-flask-httpauth",
            "binary_version": "4.5.0-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34531.json"
Ubuntu:24.04:LTS
python-flask-httpauth

Package

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

Affected ranges

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

Affected versions

4.*
4.5.0-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-flask-httpauth",
            "binary_version": "4.5.0-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34531.json"
Ubuntu:25.10
python-flask-httpauth

Package

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

Affected ranges

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

Affected versions

4.*
4.8.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-flask-httpauth",
            "binary_version": "4.8.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34531.json"
Ubuntu:26.04:LTS
python-flask-httpauth

Package

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

Affected ranges

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

Affected versions

4.*
4.8.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-flask-httpauth",
            "binary_version": "4.8.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34531.json"