CVE-2026-110642

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/xhtml2pdf/xhtml2pdf/blob/v0.2.18/xhtml2pdf/pisa.py#L393-L400
https://github.com/xhtml2pdf/xhtml2pdf/commit/f86380dad15b3a6810201d08755a3ee6b19d5063
https://github.com/xhtml2pdf/xhtml2pdf/pull/835
https://github.com/xhtml2pdf/xhtml2pdf/releases/tag/v0.2.19
https://www.vulncheck.com/advisories/xhtml2pdf-before-0.2.19-os-command-injection-via-startviewer-file-name

Configurations

No configuration.

History

14 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 15:17

Updated : 2026-10-15 14:47

NVD link : CVE-2026-110642

Mitre link : CVE-2026-110642

CVE.ORG link : CVE-2026-110642

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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