UBUNTU-CVE-2026-44587

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Source
https://ubuntu.com/security/CVE-2026-44587
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44587.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-44587
Upstream
  • CVE-2026-44587
Published
2026-06-17T13:20:00Z
Modified
2026-06-24T11:01:41.198892888Z
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
  • 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

CarrierWave is a framework to upload files from Ruby applications. In versions prior to 2.2.7 and 3.1.3, the contenttypedenylist check fails to escape regex metacharacters in string entries, causing the denylist to silently not match the content types it is intended to block. In lib/carrierwave/uploader/contenttypedenylist.rb:57, denylist entries are interpolated directly into a regex without Regexp.quote or anchoring, so an entry such as image/svg+xml becomes the pattern /image\/svg+xml/, in which + is treated as a quantifier rather than a literal character and therefore never matches the real MIME type image/svg+xml. This is inconsistent with the allowlist implementation, which correctly applies both Regexp.quote and a \A anchor. Other content types containing regex metacharacters, such as application/xhtml+xml, are affected as well. As a result, any application that relies on contenttypedenylist to block image/svg+xml, most commonly to prevent stored XSS, is silently unprotected. An attacker can upload an SVG file containing arbitrary JavaScript; if the application serves that SVG inline from its own origin, the script executes in the victim's browser, resulting in stored XSS. This issue has been fixed in versions 2.2.7 and 3.1.3.

References

Affected packages

Ubuntu:16.04:LTS / ruby-carrierwave

Package

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

Affected ranges

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

Affected versions

0.*
0.10.0+gh-1
0.10.0+gh-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-carrierwave",
            "binary_version": "0.10.0+gh-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44587.json"

Ubuntu:Pro:18.04:LTS / ruby-carrierwave

Package

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

Affected ranges

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

Affected versions

0.*
0.10.0+gh-4
1.*
1.1.0-3
1.2.2-1
1.2.2-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-carrierwave",
            "binary_version": "1.2.2-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44587.json"

Ubuntu:Pro:20.04:LTS / ruby-carrierwave

Package

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

Affected ranges

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

Affected versions

1.*
1.3.1-2
1.3.1-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-carrierwave",
            "binary_version": "1.3.1-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44587.json"

Ubuntu:Pro:22.04:LTS / ruby-carrierwave

Package

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

Affected ranges

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

Affected versions

1.*
1.3.2-2
1.3.2-2ubuntu0.22.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-carrierwave",
            "binary_version": "1.3.2-2ubuntu0.22.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44587.json"

Ubuntu:Pro:24.04:LTS / ruby-carrierwave

Package

Name
ruby-carrierwave
Purl
pkg:deb/ubuntu/ruby-carrierwave?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

1.*
1.3.2-2
1.3.2-2ubuntu0.24.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ruby-carrierwave",
            "binary_version": "1.3.2-2ubuntu0.24.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44587.json"