CVE-2026-55554 Dompdf: Chroot Validation Bypass

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...

CVE-2026-55554 Dompdf: Chroot Validation Bypass

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...

CVE-2026-55554 Dompdf: Chroot Validation Bypass

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...

CVE-2026-55554

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...

EUVD-2026-50011

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...

CVE-2026-55554

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...

CVE-2026-55554

CVE-2026-55554 affects Dompdf (PHP HTML-to-PDF converter). The issue stems from validateLocalUri() using a realpath()-based normalization and a prefix strpos() check to enforce chroot boundaries. Because trailing directory separators are stripped during normalization, a defined chroot like /var/w...

CVE-2026-55554: Improper Input Validation

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...

Path Traversal

dompdf/dompdf is vulnerable to Path Traversal. The vulnerability is due to an improper prefix validation in the validateLocalUri method, where normalized paths are checked using strpos without enforcing directory boundaries, which allows an attacker who can control rendered HTML to escape the...

File Existence Oracle

dompdf/dompdf is vulnerable to File Existence Oracle. The vulnerability is due to inconsistent handling of the CSS @font-face directive when processing local file:// resources, which allows an attacker to repeatedly reference local files and observe differences in memory exhaustion behavior to...

Dompdf: Local file read due to improper file path validation in SVG images encoded as data-URI

Description: An attacker, who controls the HTML input supplied to dompdf, can read arbitrary images from the server’s file system, bypassing the chroot restriction. The vulnerability is exploitable in the default configuration. Exploitation conditions: An external user Researcher: Nikita Sveshnik...

GHSA-CX96-42PX-69FM Dompdf: Local file read due to improper file path validation in SVG images encoded as data-URI

Description: An attacker, who controls the HTML input supplied to dompdf, can read arbitrary images from the server’s file system, bypassing the chroot restriction. The vulnerability is exploitable in the default configuration. Exploitation conditions: An external user Researcher: Nikita Sveshnik...

GHSA-WVH6-F5JH-8GW4 Dompdf: Chroot Validation Bypass

Summary The chroot check for local files uses a prefix string check to enforce chroot boundaries. The simple string comparison it performs allows paths like /var/www/rootsecret/file.html when chroot is /var/www/root. This allows attacker-controlled document paths/resources to bypass intended loca...

Dompdf: Chroot Validation Bypass

Summary The chroot check for local files uses a prefix string check to enforce chroot boundaries. The simple string comparison it performs allows paths like /var/www/rootsecret/file.html when chroot is /var/www/root. This allows attacker-controlled document paths/resources to bypass intended loca...

PT-2026-63542

Name of the Vulnerable Software and Affected Versions Dompdf versions prior to 3.16 Description An issue exists in the validateLocalUri method where chroot boundaries are enforced using a strpos prefix check after paths are normalized with realpath. Because normalization removes the trailing...

SUSE CVE-2026-44507

REJECT DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-43617. Reason: This candidate is a duplicate of CVE-2026-43617. Notes: All CVE users should reference CVE-2026-43617 instead of this candidate...

SUSE CVE-2026-44509

REJECT DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-43619. Reason: This candidate is a duplicate of CVE-2026-43619. Notes: All CVE users should reference CVE-2026-43619 instead of this candidate...

Symlink Attack

Overview Affected versions of this package are vulnerable to Symlink Attack via the chmod, chown, or similar path-based system calls. An attacker can modify permissions, ownership, or timestamps of files outside the intended directory by exploiting symlink races. This is only exploitable if the...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the reverse DNS lookup process. An attacker can bypass hostname-based access controls by connecting from a hostname that should be denied, if the chroot environment lacks required resolution files. Remediation...

CVE-2026-44509

Rejected reason: REJECT DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-43619. Reason: This candidate is a duplicate of CVE-2026-43619. Notes: All CVE users should reference CVE-2026-43619 instead of this candidate...