CVE-2026-110642

High

Description

xhtml2pdf before 0.2.19 contains an OS command injection vulnerability in pisa.startViewer() that allows attackers to execute commands by interpolating unescaped file names into os.system. Attackers can supply an input file whose name contains a double quote and shell metacharacters, which runs OS commands as the invoking user when the pisa tool is used with -s/--start-viewer.

SeverityHigh

CVSS7.8

Exploit probability—

ProductXhtml2pdf

PublishedOct 14, 2026

First seenOct 14, 2026

Weakness typeCWE-78OS command injection

How to fix

Update

xhtml2pdf xhtml2pdf0.2.19 or later

Patches

Vendor advisories

github.com/xhtml2pdf/xhtml2pdf/releases/tag/v0.2.19

Affected products

Product	Affected versions	Fixed in
xhtml2pdf xhtml2pdf	v < 0.2.19	0.2.19

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