CVE Watch5 ago 2026

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 strp

CVSS

7.5

Alto

EPSS

0.3%

p26

KEV

—

Exploit Today

0-100

Publicado: 28 jul 2026 · Última mod.: 5 ago 2026 · CWE-20

EPSS · 30d

0.3%EPSS · 30 días0.3%

2026-08-172026-09-14

Descripción técnica

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.

Referencias oficiales

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