UBUNTU-CVE-2026-56722

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Source
https://ubuntu.com/security/CVE-2026-56722
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56722.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-56722
Upstream
Published
2026-07-30T00:00:00Z
Modified
2026-07-30T16:00:27.522259213Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, aAn attacker who controls the HTML input can bypass this restriction by embedding a target file path inside an SVG image delivered through a  data:  URI, because dompdf processes the SVG twice and the second pass does not enforce the same protections as the first. When rendering, dompdf hands the SVG to the separate  php-svg-lib  library with external references forced on, and that library has no knowledge of the chroot directory, blocks only the  phar://  scheme, and ultimately reads the referenced file with no path or protocol validation. This lets an external, unauthenticated attacker read arbitrary image files from the server's file system in the default configuration. This issue has been fixed in version 3.16.

References

Affected packages

Ubuntu:Pro:16.04:LTS / php-dompdf

Package

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

Affected ranges

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

Affected versions

0.*
0.6.1+dfsg-2
0.6.1+dfsg-2build1
0.6.1+dfsg-2ubuntu1
0.6.1+dfsg-2ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-dompdf",
            "binary_version": "0.6.1+dfsg-2ubuntu1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56722.json"

Ubuntu:Pro:18.04:LTS / php-dompdf

Package

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

Affected ranges

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

Affected versions

0.*
0.6.2+dfsg-3
0.6.2+dfsg-3ubuntu0.18.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-dompdf",
            "binary_version": "0.6.2+dfsg-3ubuntu0.18.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56722.json"

Ubuntu:20.04:LTS / php-dompdf

Package

Name
php-dompdf
Purl
pkg:deb/ubuntu/php-dompdf?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.6.2+dfsg-3
0.6.2+dfsg-3ubuntu0.20.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-dompdf",
            "binary_version": "0.6.2+dfsg-3ubuntu0.20.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56722.json"

Ubuntu:22.04:LTS / php-dompdf

Package

Name
php-dompdf
Purl
pkg:deb/ubuntu/php-dompdf?arch=source&distro=jammy

Affected ranges

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

Affected versions

0.*
0.6.2+dfsg-3.1
0.6.2+dfsg-3.1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-dompdf",
            "binary_version": "0.6.2+dfsg-3.1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56722.json"