CVE-2026-110642CWE-78command-injection

CVE-2026-110642

High · published October 14, 2026

CVSS v3.1
7.8
EPSS
1%
Percentile
66.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
8.5 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.01146 · 66.5th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-10-14T19:17Z
References (5)
https://github.com/xhtml2pdf/xhtml2pdf/blob/v0.2.18/xhtml2pdf/pisa.py#L393-L400 · [email protected]https://github.com/xhtml2pdf/xhtml2pdf/commit/f86380dad15b3a6810201d08755a3ee6b19d5063 · [email protected]https://github.com/xhtml2pdf/xhtml2pdf/pull/835 · [email protected]https://github.com/xhtml2pdf/xhtml2pdf/releases/tag/v0.2.19 · [email protected]https://www.vulncheck.com/advisories/xhtml2pdf-before-0.2.19-os-command-injection-via-startviewer-file-name · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 14 OCT 14:17Z
    xhtml2pdf before 0.2.19 OS Command Injection via startViewer File Name
    cvelistv5
  • 14 OCT 14:17Z
    xhtml2pdf before 0.2.19 OS Command Injection via startViewer File Name
    cvelistv5