CVE-2026-110642
CVE-2026-110642 · xhtml2pdf before 0.2.19 OS Command Injection via startViewer File Name
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 8.5 · High · EPSS 1.1% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
xhtml2pdf
- Versions
- ≥ 0, < 0.2.19: Affected (semver)
Update to 0.2.19
xhtml2pdf Debian:12
- Versions
- 0.2.15+dfsg-1
- 0.2.15+dfsg-2
- 0.2.16+dfsg-1
- 0.2.17+dfsg-1
- 0.2.5-3
- 0.2.5-4
- 0.2.5-5
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xhtml2pdf Debian:13
- Versions
- 0.2.17+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xhtml2pdf Debian:14
- Versions
- 0.2.17+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xhtml2pdf Ubuntu:18.04:LTS
- Versions
- 0.2b-1
- 0.2b-2
- 0.2.1-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xhtml2pdf Ubuntu:20.04:LTS
- Versions
- 0.2.2-3
- 0.2.2-3build1
- 0.2.2-5
- 0.2.4-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xhtml2pdf Ubuntu:22.04:LTS
- Versions
- 0.2.4-1
- 0.2.4-1ubuntu1
- 0.2.5-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xhtml2pdf Ubuntu:24.04:LTS
- Versions
- 0.2.5-3
- 0.2.5-5
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xhtml2pdf Ubuntu:26.10
- Versions
- 0.2.17+dfsg-1ubuntu2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xhtml2pdf Ubuntu:26.04:LTS
- Versions
- 0.2.17+dfsg-1ubuntu1
- 0.2.17+dfsg-1ubuntu2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://github.com/xhtml2pdf/xhtml2pdf/pull/835
- https://github.com/xhtml2pdf/xhtml2pdf/commit/f86380dad15b3a6810201d08755a3ee6b19d5063
- https://github.com/xhtml2pdf/xhtml2pdf/releases/tag/v0.2.19
- https://github.com/xhtml2pdf/xhtml2pdf/blob/v0.2.18/xhtml2pdf/pisa.py#L393-L400
- https://www.vulncheck.com/advisories/xhtml2pdf-before-0.2.19-os-command-injection-via-startviewer-file-name
- https://nvd.nist.gov/vuln/detail/CVE-2026-110642