UBUNTU-CVE-2026-102598

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-102598
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102598.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-102598
Upstream
Published
2026-09-29T16:17:00Z
Modified
2026-10-01T00:21:06Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Werkzeug is a comprehensive WSGI web application library. Prior to 3.1.9, the safe_join function used by send_from_directory can allow a NUL: special-device path because safe_join checks the Windows device name without first removing an empty NTFS ADS marker. The trigger is that an application runs on Windows with NTFS and serves a user-specified path ending in a special device name such as NUL:. The attack mechanism is that a requested path ends in a Windows special device name with an empty ADS marker. The impact is that the special device opens successfully and the file read hangs indefinitely. This issue is fixed in version 3.1.9.

References

Affected packages

Ubuntu:20.04:LTS
python-werkzeug

Package

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

Affected ranges

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

Affected versions

0.*
0.14.1+dfsg1-4
0.15.6+dfsg1-1
0.16.0+dfsg1-1
0.16.1+dfsg1-1ubuntu1
0.16.1+dfsg1-2
0.16.1+dfsg1-2ubuntu0.1
0.16.1+dfsg1-2ubuntu0.2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-werkzeug",
            "binary_version":  "0.16.1+dfsg1-2ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102598.json"
Ubuntu:22.04:LTS
python-werkzeug

Package

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

Affected ranges

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

Affected versions

1.*
1.0.1+dfsg1-2
2.*
2.0.2+dfsg1-1
2.0.2+dfsg1-1ubuntu0.22.04.1
2.0.2+dfsg1-1ubuntu0.22.04.2
2.0.2+dfsg1-1ubuntu0.22.04.3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-werkzeug",
            "binary_version":  "2.0.2+dfsg1-1ubuntu0.22.04.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102598.json"
Ubuntu:24.04:LTS
python-werkzeug

Package

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

Affected ranges

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

Affected versions

2.*
2.2.2-3
3.*
3.0.1-1
3.0.1-2
3.0.1-3
3.0.1-3ubuntu0.1
3.0.1-3ubuntu0.2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-werkzeug",
            "binary_version":  "3.0.1-3ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102598.json"
Ubuntu:26.04:LTS
python-werkzeug

Package

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

Affected ranges

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

Affected versions

3.*
3.1.3-2
3.1.4-1
3.1.5-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-werkzeug",
            "binary_version":  "3.1.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102598.json"
Ubuntu:Pro:16.04:LTS
python-werkzeug

Package

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

Affected ranges

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

Affected versions

0.*
0.10.4+dfsg1-1ubuntu1
0.10.4+dfsg1-1ubuntu1.1
0.10.4+dfsg1-1ubuntu1.2
0.10.4+dfsg1-1ubuntu1.2+esm1
0.10.4+dfsg1-1ubuntu1.2+esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-werkzeug",
            "binary_version":  "0.10.4+dfsg1-1ubuntu1.2+esm2"
        },
        {
            "binary_name":  "python3-werkzeug",
            "binary_version":  "0.10.4+dfsg1-1ubuntu1.2+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102598.json"
Ubuntu:Pro:18.04:LTS
python-werkzeug

Package

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

Affected ranges

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

Affected versions

0.*
0.12.2+dfsg1-2
0.13+dfsg1-1
0.14.1+dfsg1-1
0.14.1+dfsg1-1ubuntu0.1
0.14.1+dfsg1-1ubuntu0.2
0.14.1+dfsg1-1ubuntu0.2+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-werkzeug",
            "binary_version":  "0.14.1+dfsg1-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "python3-werkzeug",
            "binary_version":  "0.14.1+dfsg1-1ubuntu0.2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102598.json"