DEBIAN-CVE-2026-55554
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-55554
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55554.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-55554
- Upstream
- Published
- 2026-07-28T20:17:26.723Z
- Modified
- 2026-07-29T09:00:16.315575350Z
- Severity
-
- 2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- Details
-
Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, the validateLocalUri() method enforces chroot boundaries with a strpos() prefix check after normalizing paths with realpath() . Because normalization strips the trailing directory separator from $chrootPath , the check only verifies that $chrootPath is a string prefix of $realfile, so a chroot of /var/www also matches sibling directories like /var/www2 , /var/www-admin, or /var/www_backup. An attacker who controls part of the rendered HTML could exploit this to escape the chroot and read sensitive files outside the allowed directory. This issue has been fixed in version 3.16.
- References
Affected packages
Debian:11 / php-dompdf
Package
- Name
- php-dompdf
- Purl
- pkg:deb/debian/php-dompdf?arch=source&distro=bullseye
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Debian:12 / php-dompdf
Package
- Name
- php-dompdf
- Purl
- pkg:deb/debian/php-dompdf?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected