CVE-2026-56722

Name	CVE-2026-56722
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1142987

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
php-dompdf (PTS)	bullseye	0.6.2+dfsg-3.1	vulnerable
	bullseye (security)	0.6.2+dfsg-3.1+deb11u1	vulnerable
	bookworm	2.0.3+dfsg-1+deb12u1	vulnerable
	sid	3.1.4+dfsg-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
php-dompdf	source	(unstable)	(unfixed)			1142987

Notes

https://github.com/dompdf/dompdf/security/advisories/GHSA-cx96-42px-69fm
Fixed by: https://github.com/dompdf/dompdf/commit/6a58996865db05d8fede748507e50ac4b8c5bfd0 (v3.1.6)
Fixed by: https://github.com/dompdf/dompdf/commit/bf7b02f642e26007dedc5a22b3d6e15f9931120a (v3.1.6)