Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dompdf Project | Dompdf | < 3.1.6 |
Related Weaknesses (CWE)
References
- https://github.com/dompdf/dompdf/commit/6a58996865db05d8fede748507e50ac4b8c5bfd0Patch
- https://github.com/dompdf/dompdf/commit/bf7b02f642e26007dedc5a22b3d6e15f9931120aPatch
- https://github.com/dompdf/dompdf/releases/tag/v3.1.6Release Notes
- https://github.com/dompdf/dompdf/security/advisories/GHSA-cx96-42px-69fmExploitVendor Advisory
- https://github.com/dompdf/dompdf/security/advisories/GHSA-cx96-42px-69fmExploitVendor Advisory
FAQ
What is CVE-2026-56722?
CVE-2026-56722 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 deliver...
How severe is CVE-2026-56722?
CVE-2026-56722 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56722?
Check the references section above for vendor advisories and patch information. Affected products include: Dompdf Project Dompdf.