HIGH 8.5 NVD
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 unescape
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.
References
- 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-star
This high severity vulnerability with a CVSS score of 8.5 was published on 2026-10-14 via NVD.
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