Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M
CVE-2026-59943Dompdf: Embedded SVG images can leak existence of files and directories within the filesystem
Medium 6.3
In plain English
A medium-severity security flaw in dompdf from dompdf. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | php-dompdf | no fix listed | DEBIAN-CVE-2026-59943 |
| Packagist | dompdf/dompdf | 3.1.6 | GHSA-j8qw-6jw8-r297 |
| Ubuntu:22.04:LTS | php-dompdf | no fix listed | UBUNTU-CVE-2026-59943 |
Affected products (as reported)
Weakness: CWE-209 · Vector: 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
References
- https://github.com/dompdf/dompdf/security/advisories/GHSA-j8qw-6jw8-r297 x_refsource_CONFIRM
- https://github.com/dompdf/dompdf/commit/6a58996865db05d8fede748507e50ac4b8c5bfd0 x_refsource_MISC
- https://github.com/dompdf/dompdf/releases/tag/v3.1.6 x_refsource_MISC