CVE-2026-59943

CVE-2026-59943 · Dompdf: Embedded SVG images can leak existence of files and directories within the filesystem

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Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, if a malicious actor can supply unrestricted content for rendering by Dompdf they can utilize the SVG rendering functionality to leak filesystem information when rendering PDF files using image references within a data-URI encoded SVG document. Using an <image> element inside a data-URI embedded SVG, an attacker can attempt to embed other files via the href or xlink:href attributes. When processing a file that does not exist (e.g. file:///DOESNOTEXIST), dompdf behaves differently than it does when accessing a file or directory that actually exists on the filesystem. This issue has been fixed in version 3.16.

CVSS 6.3 · Medium · EPSS 0.4% · Fix available

Published

2026-07-28T20:19:22.746Z

Updated

2026-07-29T12:37:56.940Z

Stack: system · php

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