UBUNTU-CVE-2026-126085

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Source
https://ubuntu.com/security/CVE-2026-126085
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126085.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-126085
Upstream
Published
2026-11-12T00:00:00Z
Modified
2026-11-12T23:46:37Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

Active Storage makes it simple to upload and reference files in cloud services and attach those files to Active Record objects. Prior to 8.1.4.1 and 8.0.5.2, ActiveStorage::Service::GCSService#url_for_direct_upload does not bind the declared content length into the signed direct-upload URL, and #headers_for_direct_upload returns no length constraint, so the URL authorizes an upload body of any size. A direct-upload client could store a file larger than the byte_size it declared, and the resulting blob keeps the declared size, possibly bypassing application file size validations and quotas. This is the weakness that CVE-2020-8162 fixed in the S3 service. Applications that store files in Google Cloud Storage and accept direct uploads are affected. This issue is fixed in versions 8.1.4.1 and 8.0.5.2.

References

Affected packages

Ubuntu:24.04:LTS
rails

Package

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

Affected ranges

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

Affected versions

2:6.*
2:6.1.7.3+dfsg-2build1
2:6.1.7.3+dfsg-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:6.1.7.3+dfsg-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126085.json"
Ubuntu:26.04:LTS
rails

Package

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

Affected ranges

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

Affected versions

2:7.*
2:7.2.2.1+dfsg-7
2:7.2.2.2+dfsg-2
2:7.2.3+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:7.2.3+dfsg-2"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:7.2.3+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126085.json"
Ubuntu:26.10
rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails?arch=source&distro=stonking

Affected ranges

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

Affected versions

2:7.*
2:7.2.3+dfsg-2
2:7.2.3.2+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:7.2.3.2+dfsg-2"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:7.2.3.2+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126085.json"
Ubuntu:Pro:16.04:LTS
rails

Package

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

Affected ranges

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

Affected versions

2:4.*
2:4.1.10-1
2:4.2.5-1
2:4.2.5.1-1
2:4.2.5.2-2
2:4.2.6-1
2:4.2.6-1ubuntu0.1~esm1
2:4.2.6-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126085.json"
Ubuntu:Pro:18.04:LTS
rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

2:4.*
2:4.2.9-2
2:4.2.9-4
2:4.2.10-0ubuntu4
2:4.2.10-0ubuntu4+esm1
2:4.2.10-0ubuntu4+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126085.json"
Ubuntu:Pro:20.04:LTS
rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

2:5.*
2:5.2.2.1+dfsg-1ubuntu1
2:5.2.3+dfsg-3
2:5.2.3+dfsg-3ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126085.json"
Ubuntu:Pro:22.04:LTS
rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

2:6.*
2:6.0.3.7+dfsg-2
2:6.1.4.1+dfsg-8ubuntu2
2:6.1.4.1+dfsg-8ubuntu2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126085.json"