CVE-2026-110636
CVE-2026-110636 · pypdftk through 0.5 OS Command Injection via PDF and Output Paths
This page contains facts from public vulnerability sources. Check the original advisory before updating.
pypdftk through 0.5 contains an OS command injection vulnerability in fill_form(), dump_data_fields(), and pdftk_cmd_util() that builds shell commands from caller-supplied paths. Attackers controlling pdf_path or out_file can inject shell metacharacters interpreted by subprocess.Popen with shell=True to execute OS commands as the Python process.
CVSS 9.3 · Critical · EPSS 2.3%
- Published
- Updated
Affected products and versions
pypdftk
- Versions
- ≥ 0, ≤ 0.5: Affected (custom)
No fix published
Original sources
- https://github.com/revolunet/pypdftk/issues/56
- https://github.com/revolunet/pypdftk/pull/57
- https://github.com/revolunet/pypdftk/blob/1d3b40c3b42fb3cc6b0192d34aba2c21a1efd369/pypdftk.py#L87-L123
- https://github.com/revolunet/pypdftk
- https://www.vulncheck.com/advisories/pypdftk-through-0.5-os-command-injection-via-pdf-and-output-paths
- https://nvd.nist.gov/vuln/detail/CVE-2026-110636