UBUNTU-CVE-2026-54770

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Source
https://ubuntu.com/security/CVE-2026-54770
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54770.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-54770
Upstream
Published
2026-08-20T17:18:00Z
Modified
2026-09-24T02:00:27Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

WebOb provides objects for HTTP requests and responses. Prior to 1.8.11, Response._make_location_absolute() in src/webob/response.py checks a Location value for a URI scheme or leading double slash before urllib.parse.urljoin() strips leading C0 control characters and spaces. An attacker-controlled value such as a space followed by a protocol-relative or absolute URL can therefore bypass SCHEME_RE and startswith("//") checks and be normalized to an off-host redirect. Request.relative_url() and webob.exc._HTTPMove subclasses, including HTTPFound, are also affected because they use the same unsafe URL joining behavior or bypass the earlier normalization path. An unauthenticated attacker who can influence an application's redirect target can send users to an attacker-controlled host for phishing or OAuth and SSO token theft, but exploitation requires the user to follow the redirect. This issue is fixed in version 1.8.11.

References

Affected packages

Ubuntu:22.04:LTS
python-webob

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.8.6-1.1
1:1.8.6-1.1ubuntu0.1
1:1.8.6-1.1ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-webob",
            "binary_version": "1:1.8.6-1.1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54770.json"
Ubuntu:24.04:LTS
python-webob

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.8.6-3
1:1.8.7-1
1:1.8.7-1ubuntu0.1.24.04.1
1:1.8.7-1ubuntu0.1.24.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-webob",
            "binary_version": "1:1.8.7-1ubuntu0.1.24.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54770.json"
Ubuntu:26.04:LTS
python-webob

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.8.9-1
1:1.8.9-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-webob",
            "binary_version": "1:1.8.9-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54770.json"
Ubuntu:Pro:16.04:LTS
python-webob

Package

Name
python-webob
Purl
pkg:deb/ubuntu/python-webob?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.*
1.4.1-1
1.5.1-1
1.5.1-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-webob",
            "binary_version": "1.5.1-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "python3-webob",
            "binary_version": "1.5.1-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54770.json"
Ubuntu:Pro:18.04:LTS
python-webob

Package

Name
python-webob
Purl
pkg:deb/ubuntu/python-webob?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.*
1:1.7.2-0ubuntu1
1:1.7.3-0ubuntu1
1:1.7.3-2fakesync1
1:1.7.3-2ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-webob",
            "binary_version": "1:1.7.3-2ubuntu0.1~esm2"
        },
        {
            "binary_name": "python3-webob",
            "binary_version": "1:1.7.3-2ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54770.json"
Ubuntu:Pro:20.04:LTS
python-webob

Package

Name
python-webob
Purl
pkg:deb/ubuntu/python-webob?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.*
1:1.8.5-1
1:1.8.5-1build1
1:1.8.5-2
1:1.8.5-2ubuntu0.1
1:1.8.5-2ubuntu0.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-webob",
            "binary_version": "1:1.8.5-2ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54770.json"