UBUNTU-CVE-2026-126208

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-126208
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126208.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-126208
Upstream
Published
2026-11-13T00:00:00Z
Modified
2026-11-13T21:05:52Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Prior to 2.25.3, Loofah's SVG_ALLOW_LOCAL_HREF safelist lists textPath with lowercase spelling that does not match the HTML5 parser's element name and omits mpath, so external href and xlink:href values on those elements survive sanitization. Firefox fetches the attacker-chosen URL when a viewer renders the content, which can disclose the viewer's IP address, user agent, referrer, and access to hosts routable only from the viewer's network. Chrome and WebKit do not fetch these references, and the impact is a network request rather than script execution. The rails-html-sanitizer PermitScrubber reuses the affected safelist when SVG elements are permitted. This issue is fixed in version 2.25.3.

References

Affected packages

Ubuntu:16.04:LTS
ruby-loofah

Package

Name
ruby-loofah
Purl
pkg:deb/ubuntu/ruby-loofah?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.0.2-1
2.0.3-1
2.0.3-2
2.0.3-2+deb9u1build0.16.04.1
2.0.3-2+deb9u2build0.16.04.1
2.0.3-2+deb9u3build0.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-loofah",
            "binary_version": "2.0.3-2+deb9u3build0.16.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126208.json"
Ubuntu:18.04:LTS
ruby-loofah

Package

Name
ruby-loofah
Purl
pkg:deb/ubuntu/ruby-loofah?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*
2.0.3-2
2.2.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-loofah",
            "binary_version": "2.2.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126208.json"
Ubuntu:20.04:LTS
ruby-loofah

Package

Name
ruby-loofah
Purl
pkg:deb/ubuntu/ruby-loofah?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*
2.2.3-1
2.3.1+dfsg-1
2.4.0+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-loofah",
            "binary_version": "2.4.0+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126208.json"
Ubuntu:22.04:LTS
ruby-loofah

Package

Name
ruby-loofah
Purl
pkg:deb/ubuntu/ruby-loofah?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.12.0-1
2.13.0-1
2.13.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-loofah",
            "binary_version": "2.13.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126208.json"
Ubuntu:24.04:LTS
ruby-loofah

Package

Name
ruby-loofah
Purl
pkg:deb/ubuntu/ruby-loofah?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.21.3-1
2.21.4-1
2.22.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-loofah",
            "binary_version": "2.22.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126208.json"
Ubuntu:26.04:LTS
ruby-loofah

Package

Name
ruby-loofah
Purl
pkg:deb/ubuntu/ruby-loofah?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.24.1-1
2.25.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-loofah",
            "binary_version": "2.25.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126208.json"
Ubuntu:26.10
ruby-loofah

Package

Name
ruby-loofah
Purl
pkg:deb/ubuntu/ruby-loofah?arch=source&distro=stonking

Affected ranges

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

Affected versions

2.*
2.25.0-1
2.25.1-2
2.25.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-loofah",
            "binary_version": "2.25.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126208.json"