dompdf up to 3.15 SVG Processing input validation

Summaryinfo

A vulnerability labeled as problematic has been found in dompdf up to 3.15. This vulnerability affects unknown code of the component SVG Processing. Such manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2026-56722. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in dompdf up to 3.15. It has been rated as problematic. Affected by this issue is an unknown part of the component SVG Processing. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-56722 since 06/22/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 3.16 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• dompdf

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15

Website

• Product: https://github.com/dompdf/dompdf/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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