Detections
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SCA: security update for dompdf/dompdf (GHSA-wvh6-f5jh-8gw4)

low Tenable Cloud Security Plugin ID 445179

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-55554)

Solution

Update the dompdf/dompdf library and its related packages to version 3.1.6 or later.

See Also

https://github.com/advisories/GHSA-wvh6-f5jh-8gw4

Plugin Details

Severity: Low

ID: 445179

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 7/23/2026

Updated: 8/6/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2026-55554

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Low

Base Score: 2.3

Threat Score: 1.3

Threat Vector: CVSS:4.0/E:P

Vector: 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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/22/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-55554