CVE-2026-56722

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/dompdf/dompdf/commit/6a58996865db05d8fede748507e50ac4b8c5bfd0	Patch
https://github.com/dompdf/dompdf/commit/bf7b02f642e26007dedc5a22b3d6e15f9931120a	Patch
https://github.com/dompdf/dompdf/releases/tag/v3.1.6	Release Notes
https://github.com/dompdf/dompdf/security/advisories/GHSA-cx96-42px-69fm	Exploit Vendor Advisory
https://github.com/dompdf/dompdf/security/advisories/GHSA-cx96-42px-69fm	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dompdf_project:dompdf:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-28 21:17

Updated : 2026-08-04 16:39

NVD link : CVE-2026-56722

Mitre link : CVE-2026-56722

CVE.ORG link : CVE-2026-56722

JSON object : View

Products Affected

dompdf_project

dompdf

CWE

CWE-20

Improper Input Validation

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